122210221111021 has 4 divisors (see below), whose sum is σ = 122236273177344. Its totient is φ = 122184169044700.

The previous prime is 122210221110883. The next prime is 122210221111049. The reversal of 122210221111021 is 120111122012221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122210221111021 - 2³¹ = 122208073627373 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 122210221111021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122210221111081) 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, 13026026125 + ... + 13026035506.

It is an arithmetic number, because the mean of its divisors is an integer number (30559068294336).

Almost surely, 2^{122210221111021} is an apocalyptic number.

It is an amenable number.

122210221111021 is a deficient number, since it is larger than the sum of its proper divisors (26052066323).

122210221111021 is an equidigital number, since it uses as much as digits as its factorization.

122210221111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26052066322.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122210221111021 its reverse (120111122012221), we get a palindrome (242321343123242).

The spelling of 122210221111021 in words is "one hundred twenty-two trillion, two hundred ten billion, two hundred twenty-one million, one hundred eleven thousand, twenty-one".