1222116551100 has 54 divisors (see below), whose sum is σ = 3830656436880. Its totient is φ = 325897746720.

The previous prime is 1222116551069. The next prime is 1222116551153. The reversal of 1222116551100 is 11556112221.

It is a happy number.

1222116551100 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 1 + 1 + 6 + 551 + 100 = 666.

It is a super-2 number, since 2×1222116551100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 678952740 + ... + 678954539.

Almost surely, 2^{1222116551100} is an apocalyptic number.

1222116551100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222116551100 is an abundant number, since it is smaller than the sum of its proper divisors (2608539885780).

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

1222116551100 is a wasteful number, since it uses less digits than its factorization.

1222116551100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357907299 (or 1357907289 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The spelling of 1222116551100 in words is "one trillion, two hundred twenty-two billion, one hundred sixteen million, five hundred fifty-one thousand, one hundred".