1222100311220 has 24 divisors (see below), whose sum is σ = 2677993726464. Its totient is φ = 467586205856.

The previous prime is 1222100311147. The next prime is 1222100311261. The reversal of 1222100311220 is 221130012221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328369444 + ... + 1328370363.

It is an arithmetic number, because the mean of its divisors is an integer number (111583071936).

Almost surely, 2^{1222100311220} is an apocalyptic number.

1222100311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222100311220 is an abundant number, since it is smaller than the sum of its proper divisors (1455893415244).

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

1222100311220 is a wasteful number, since it uses less digits than its factorization.

1222100311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656739839 (or 2656739837 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1222100311220 its reverse (221130012221), we get a palindrome (1443230323441).

The spelling of 1222100311220 in words is "one trillion, two hundred twenty-two billion, one hundred million, three hundred eleven thousand, two hundred twenty".