122021211022021 has 16 divisors (see below), whose sum is σ = 137400923237760. Its totient is φ = 107677458155520.

The previous prime is 122021211021947. The next prime is 122021211022049. The reversal of 122021211022021 is 120220112120221.

It is a cyclic number.

It is not a de Polignac number, because 122021211022021 - 2⁹ = 122021211021509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 122021211022021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021211022721) 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, 1947260665 + ... + 1947323326.

It is an arithmetic number, because the mean of its divisors is an integer number (8587557702360).

Almost surely, 2^{122021211022021} is an apocalyptic number.

It is an amenable number.

122021211022021 is a deficient number, since it is larger than the sum of its proper divisors (15379712215739).

122021211022021 is a wasteful number, since it uses less digits than its factorization.

122021211022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3894584124.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122021211022021 its reverse (120220112120221), we get a palindrome (242241323142242).

The spelling of 122021211022021 in words is "one hundred twenty-two trillion, twenty-one billion, two hundred eleven million, twenty-two thousand, twenty-one".