1051112020021 has 4 divisors (see below), whose sum is σ = 1201270880032. Its totient is φ = 900953160012.

The previous prime is 1051112019907. The next prime is 1051112020033. The reversal of 1051112020021 is 1200202111501.

1051112020021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1051112020021 - 2³⁷ = 913673066549 is a prime.

It is a super-2 number, since 2×1051112020021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1051112019977 and 1051112020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051112020921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75079429995 + ... + 75079430008.

It is an arithmetic number, because the mean of its divisors is an integer number (300317720008).

Almost surely, 2^{1051112020021} is an apocalyptic number.

It is an amenable number.

1051112020021 is a deficient number, since it is larger than the sum of its proper divisors (150158860011).

1051112020021 is an equidigital number, since it uses as much as digits as its factorization.

1051112020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150158860010.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 1051112020021 its reverse (1200202111501), we get a palindrome (2251314131522).

The spelling of 1051112020021 in words is "one trillion, fifty-one billion, one hundred twelve million, twenty thousand, twenty-one".