1222122001100 has 144 divisors (see below), whose sum is σ = 3560733931776. Its totient is φ = 351619488000.

The previous prime is 1222122001073. The next prime is 1222122001103. The reversal of 1222122001100 is 11002212221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1222122001103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6004406 + ... + 6204605.

Almost surely, 2^{1222122001100} is an apocalyptic number.

1222122001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222122001100 is an abundant number, since it is smaller than the sum of its proper divisors (2338611930676).

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

1222122001100 is a wasteful number, since it uses less digits than its factorization.

1222122001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12209056 (or 12209049 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1222122001100 its reverse (11002212221), we get a palindrome (1233124213321).

The spelling of 1222122001100 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, one thousand, one hundred".