1021230031120 has 160 divisors (see below), whose sum is σ = 2600518493664. Its totient is φ = 370660147200.

The previous prime is 1021230031117. The next prime is 1021230031121. The reversal of 1021230031120 is 211300321201.

It can be written as a sum of positive squares in 16 ways, for example, as 749568082176 + 271661948944 = 865776^2 + 521212^2 .

It is a super-2 number, since 2×1021230031120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1021230031094 and 1021230031103.

It is not an unprimeable number, because it can be changed into a prime (1021230031121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130238400 + ... + 130246240.

Almost surely, 2^{1021230031120} is an apocalyptic number.

1021230031120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021230031120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300259246832).

1021230031120 is an abundant number, since it is smaller than the sum of its proper divisors (1579288462544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021230031120 is a wasteful number, since it uses less digits than its factorization.

1021230031120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9981 (or 9975 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1021230031120 its reverse (211300321201), we get a palindrome (1232530352321).

The spelling of 1021230031120 in words is "one trillion, twenty-one billion, two hundred thirty million, thirty-one thousand, one hundred twenty".