122111212012211 has 16 divisors (see below), whose sum is σ = 125693503557120. Its totient is φ = 118584706687200.

The previous prime is 122111212012187. The next prime is 122111212012319. The reversal of 122111212012211 is 112210212111221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122111212012211 - 2¹⁴ = 122111211995827 is a prime.

It is a super-2 number, since 2×122111212012211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122111242012211) 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, 20488715 + ... + 25768388.

It is an arithmetic number, because the mean of its divisors is an integer number (7855843972320).

Almost surely, 2^{122111212012211} is an apocalyptic number.

122111212012211 is a deficient number, since it is larger than the sum of its proper divisors (3582291544909).

122111212012211 is a wasteful number, since it uses less digits than its factorization.

122111212012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46257706.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 122111212012211 its reverse (112210212111221), we get a palindrome (234321424123432).

The spelling of 122111212012211 in words is "one hundred twenty-two trillion, one hundred eleven billion, two hundred twelve million, twelve thousand, two hundred eleven".