1022112021121 has 4 divisors (see below), whose sum is σ = 1027759049044. Its totient is φ = 1016464993200.

The previous prime is 1022112021109. The next prime is 1022112021181. The reversal of 1022112021121 is 1211202112201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 369312659521 + 652799361600 = 607711^2 + 807960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022112021121 - 2²⁹ = 1021575150209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022112021095 and 1022112021104.

It is not an unprimeable number, because it can be changed into a prime (1022112021181) 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, 2823513690 + ... + 2823514051.

It is an arithmetic number, because the mean of its divisors is an integer number (256939762261).

Almost surely, 2^{1022112021121} is an apocalyptic number.

It is an amenable number.

1022112021121 is a deficient number, since it is larger than the sum of its proper divisors (5647027923).

1022112021121 is an equidigital number, since it uses as much as digits as its factorization.

1022112021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5647027922.

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

Adding to 1022112021121 its reverse (1211202112201), we get a palindrome (2233314133322).

The spelling of 1022112021121 in words is "one trillion, twenty-two billion, one hundred twelve million, twenty-one thousand, one hundred twenty-one".