1021011110988 has 48 divisors (see below), whose sum is σ = 2615491167744. Its totient is φ = 307426616640.

The previous prime is 1021011110983. The next prime is 1021011111007. The reversal of 1021011110988 is 8890111101201.

It is a happy number.

It is a super-2 number, since 2×1021011110988² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1021011110983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24612820 + ... + 24654267.

It is an arithmetic number, because the mean of its divisors is an integer number (54489399328).

Almost surely, 2^{1021011110988} is an apocalyptic number.

It is an amenable number.

1021011110988 is an abundant number, since it is smaller than the sum of its proper divisors (1594480056756).

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

1021011110988 is a wasteful number, since it uses less digits than its factorization.

1021011110988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49267262 (or 49267260 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 33.

The spelling of 1021011110988 in words is "one trillion, twenty-one billion, eleven million, one hundred ten thousand, nine hundred eighty-eight".