1222100121132 has 72 divisors (see below), whose sum is σ = 3370949264592. Its totient is φ = 370232755200.

The previous prime is 1222100121131. The next prime is 1222100121149. The reversal of 1222100121132 is 2311210012221.

It is a super-2 number, since 2×1222100121132² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1222100121131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1046632 + ... + 1881392.

It is an arithmetic number, because the mean of its divisors is an integer number (46818739786).

Almost surely, 2^{1222100121132} is an apocalyptic number.

1222100121132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222100121132 is an abundant number, since it is smaller than the sum of its proper divisors (2148849143460).

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

1222100121132 is a wasteful number, since it uses less digits than its factorization.

1222100121132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838479 (or 838474 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1222100121132 its reverse (2311210012221), we get a palindrome (3533310133353).

The spelling of 1222100121132 in words is "one trillion, two hundred twenty-two billion, one hundred million, one hundred twenty-one thousand, one hundred thirty-two".