1021101120 has 224 divisors, whose sum is σ = 3879738240. Its totient is φ = 251320320.

The previous prime is 1021101113. The next prime is 1021101163. The reversal of 1021101120 is 211011201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107775 + ... + 116865.

It is an arithmetic number, because the mean of its divisors is an integer number (17320260).

Almost surely, 2^1021101120 is an apocalyptic number.

1021101120 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 1021101120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939869120).

1021101120 is an abundant number, since it is smaller than the sum of its proper divisors (2858637120).

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

1021101120 is a wasteful number, since it uses less digits than its factorization.

1021101120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9130 (or 9114 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1021101120 is about 31954.6728977156. The cubic root of 1021101120 is about 1006.9848055674.

Adding to 1021101120 its reverse (211011201), we get a palindrome (1232112321).

The spelling of 1021101120 in words is "one billion, twenty-one million, one hundred one thousand, one hundred twenty".