122112221122221 has 12 divisors (see below), whose sum is σ = 178963365391776. Its totient is φ = 74007406740520.

The previous prime is 122112221122219. The next prime is 122112221122259. The reversal of 122112221122221 is 122221122211221.

It is not a de Polignac number, because 122112221122221 - 2¹ = 122112221122219 is a prime.

It is a super-2 number, since 2×122112221122221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122112221122191 and 122112221122200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122112221121221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168198651321 + ... + 168198652046.

It is an arithmetic number, because the mean of its divisors is an integer number (14913613782648).

Almost surely, 2^{122112221122221} is an apocalyptic number.

122112221122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122112221122221 is a deficient number, since it is larger than the sum of its proper divisors (56851144269555).

122112221122221 is a wasteful number, since it uses less digits than its factorization.

122112221122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336397303392 (or 336397303381 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

Adding to 122112221122221 its reverse (122221122211221), we get a palindrome (244333343333442).

The spelling of 122112221122221 in words is "one hundred twenty-two trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-one".