1021130311020 has 72 divisors (see below), whose sum is σ = 3017567420784. Its totient is φ = 257969757312.

The previous prime is 1021130310947. The next prime is 1021130311021. The reversal of 1021130311020 is 201130311201.

It is a happy number.

It is a super-2 number, since 2×1021130311020² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1021130311021) 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 23 ways as a sum of consecutive naturals, for example, 23550139 + ... + 23593458.

It is an arithmetic number, because the mean of its divisors is an integer number (41910658622).

Almost surely, 2^{1021130311020} is an apocalyptic number.

1021130311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021130311020 is an abundant number, since it is smaller than the sum of its proper divisors (1996437109764).

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

1021130311020 is a wasteful number, since it uses less digits than its factorization.

1021130311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47143647 (or 47143626 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1021130311020 its reverse (201130311201), we get a palindrome (1222260622221).

The spelling of 1021130311020 in words is "one trillion, twenty-one billion, one hundred thirty million, three hundred eleven thousand, twenty".