1221222100232 has 16 divisors (see below), whose sum is σ = 2291306875200. Its totient is φ = 610206933520.

The previous prime is 1221222100093. The next prime is 1221222100243. The reversal of 1221222100232 is 2320012221221.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50501732 + ... + 50525907.

It is an arithmetic number, because the mean of its divisors is an integer number (143206679700).

Almost surely, 2^{1221222100232} is an apocalyptic number.

It is an amenable number.

1221222100232 is a deficient number, since it is larger than the sum of its proper divisors (1070084774968).

1221222100232 is a wasteful number, since it uses less digits than its factorization.

1221222100232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101029156 (or 101029152 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1221222100232 its reverse (2320012221221), we get a palindrome (3541234321453).

The spelling of 1221222100232 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred thousand, two hundred thirty-two".