1122021112121 has 32 divisors (see below), whose sum is σ = 1401775522560. Its totient is φ = 874368608256.

The previous prime is 1122021112111. The next prime is 1122021112127. The reversal of 1122021112121 is 1212111202211.

It is not a de Polignac number, because 1122021112121 - 2⁶ = 1122021112057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1122021112121.

It is not an unprimeable number, because it can be changed into a prime (1122021112127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61991345 + ... + 62009441.

It is an arithmetic number, because the mean of its divisors is an integer number (43805485080).

Almost surely, 2^{1122021112121} is an apocalyptic number.

It is an amenable number.

1122021112121 is a deficient number, since it is larger than the sum of its proper divisors (279754410439).

1122021112121 is a wasteful number, since it uses less digits than its factorization.

1122021112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28353.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1122021112121 its reverse (1212111202211), we get a palindrome (2334132314332).

The spelling of 1122021112121 in words is "one trillion, one hundred twenty-two billion, twenty-one million, one hundred twelve thousand, one hundred twenty-one".