122155214211 has 16 divisors (see below), whose sum is σ = 186808453120. Its totient is φ = 78809815080.

The previous prime is 122155214197. The next prime is 122155214213. The reversal of 122155214211 is 112412551221.

122155214211 is a `hidden beast` number, since 1 + 2 + 215 + 5 + 21 + 421 + 1 = 666.

It is not a de Polignac number, because 122155214211 - 2¹⁵ = 122155181443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122155214213) 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, 72971215 + ... + 72972888.

It is an arithmetic number, because the mean of its divisors is an integer number (11675528320).

Almost surely, 2^122155214211 is an apocalyptic number.

122155214211 is a deficient number, since it is larger than the sum of its proper divisors (64653238909).

122155214211 is a wasteful number, since it uses less digits than its factorization.

122155214211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145944143 (or 145944137 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

Adding to 122155214211 its reverse (112412551221), we get a palindrome (234567765432).

The spelling of 122155214211 in words is "one hundred twenty-two billion, one hundred fifty-five million, two hundred fourteen thousand, two hundred eleven".