122021120012111 has 4 divisors (see below), whose sum is σ = 125957285173824. Its totient is φ = 118084954850400.

The previous prime is 122021120012081. The next prime is 122021120012171. The reversal of 122021120012111 is 111210021120221.

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

It is a cyclic number.

It is not a de Polignac number, because 122021120012111 - 2⁴² = 117623073501007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122021120012111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021120012171) 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, 1968082580810 + ... + 1968082580871.

It is an arithmetic number, because the mean of its divisors is an integer number (31489321293456).

Almost surely, 2^{122021120012111} is an apocalyptic number.

122021120012111 is a deficient number, since it is larger than the sum of its proper divisors (3936165161713).

122021120012111 is an equidigital number, since it uses as much as digits as its factorization.

122021120012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936165161712.

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

Adding to 122021120012111 its reverse (111210021120221), we get a palindrome (233231141132332).

The spelling of 122021120012111 in words is "one hundred twenty-two trillion, twenty-one billion, one hundred twenty million, twelve thousand, one hundred eleven".