1022021112121 has 16 divisors (see below), whose sum is σ = 1099206574848. Its totient is φ = 948016238400.

The previous prime is 1022021112109. The next prime is 1022021112127. The reversal of 1022021112121 is 1212111202201.

It is a cyclic number.

It is not a de Polignac number, because 1022021112121 - 2²³ = 1022012723513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022021112095 and 1022021112104.

It is not an unprimeable number, because it can be changed into a prime (1022021112127) 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, 5030346 + ... + 5229571.

It is an arithmetic number, because the mean of its divisors is an integer number (68700410928).

Almost surely, 2^{1022021112121} is an apocalyptic number.

It is an amenable number.

1022021112121 is a deficient number, since it is larger than the sum of its proper divisors (77185462727).

1022021112121 is a wasteful number, since it uses less digits than its factorization.

1022021112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260072.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1022021112121 its reverse (1212111202201), we get a palindrome (2234132314322).

The spelling of 1022021112121 in words is "one trillion, twenty-two billion, twenty-one million, one hundred twelve thousand, one hundred twenty-one".