122112220221100 has 72 divisors (see below), whose sum is σ = 273714592894848. Its totient is φ = 47237584166400.

The previous prime is 122112220221083. The next prime is 122112220221137. The reversal of 122112220221100 is 1122022211221.

It is a super-2 number, since 2×122112220221100² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8563609 + ... + 17820208.

It is an arithmetic number, because the mean of its divisors is an integer number (3801591567984).

Almost surely, 2^{122112220221100} is an apocalyptic number.

122112220221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122112220221100 is an abundant number, since it is smaller than the sum of its proper divisors (151602372673748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122112220221100 is a wasteful number, since it uses less digits than its factorization.

122112220221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26385355 (or 26385348 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122112220221100 its reverse (1122022211221), we get a palindrome (123234242432321).

The spelling of 122112220221100 in words is "one hundred twenty-two trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty-one thousand, one hundred".