1022011112021 has 4 divisors (see below), whose sum is σ = 1022060336544. Its totient is φ = 1021961887500.

The previous prime is 1022011112009. The next prime is 1022011112029. The reversal of 1022011112021 is 1202111102201.

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 a de Polignac number, because none of the positive numbers 2^k-1022011112021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022011111987 and 1022011112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022011112029) 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, 24581105 + ... + 24622646.

It is an arithmetic number, because the mean of its divisors is an integer number (255515084136).

Almost surely, 2^{1022011112021} is an apocalyptic number.

It is an amenable number.

1022011112021 is a deficient number, since it is larger than the sum of its proper divisors (49224523).

1022011112021 is an equidigital number, since it uses as much as digits as its factorization.

1022011112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49224522.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1022011112021 its reverse (1202111102201), we get a palindrome (2224122214222).

The spelling of 1022011112021 in words is "one trillion, twenty-two billion, eleven million, one hundred twelve thousand, twenty-one".