122621371111 has 4 divisors (see below), whose sum is σ = 124098737112. Its totient is φ = 121144005112.

The previous prime is 122621371091. The next prime is 122621371133. The reversal of 122621371111 is 111173126221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111173126221 = 1429 ⋅77797849.

It is a cyclic number.

It is not a de Polignac number, because 122621371111 - 2⁷ = 122621370983 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 122621371111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122621371511) 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, 738682876 + ... + 738683041.

It is an arithmetic number, because the mean of its divisors is an integer number (31024684278).

Almost surely, 2^122621371111 is an apocalyptic number.

122621371111 is a deficient number, since it is larger than the sum of its proper divisors (1477366001).

122621371111 is an equidigital number, since it uses as much as digits as its factorization.

122621371111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477366000.

The product of its digits is 1008, while the sum is 28.

Adding to 122621371111 its reverse (111173126221), we get a palindrome (233794497332).

The spelling of 122621371111 in words is "one hundred twenty-two billion, six hundred twenty-one million, three hundred seventy-one thousand, one hundred eleven".