1000111011021 has 12 divisors (see below), whose sum is σ = 1444771662048. Its totient is φ = 666663657864.

The previous prime is 1000111010971. The next prime is 1000111011043. The reversal of 1000111011021 is 1201101110001.

It is not a de Polignac number, because 1000111011021 - 2³¹ = 997963527373 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1000111010994 and 1000111011012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000111011121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6335715 + ... + 6491648.

It is an arithmetic number, because the mean of its divisors is an integer number (120397638504).

Almost surely, 2^{1000111011021} is an apocalyptic number.

It is an amenable number.

1000111011021 is a deficient number, since it is larger than the sum of its proper divisors (444660651027).

1000111011021 is a wasteful number, since it uses less digits than its factorization.

1000111011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12836032 (or 12836029 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1000111011021 its reverse (1201101110001), we get a palindrome (2201212121022).

The spelling of 1000111011021 in words is "one trillion, one hundred eleven million, eleven thousand, twenty-one".