1213212223102 has 16 divisors (see below), whose sum is σ = 1986811036272. Its totient is φ = 551028248320.

The previous prime is 1213212223099. The next prime is 1213212223129. The reversal of 1213212223102 is 2013222123121.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 21563923 + ... + 21620110.

It is an arithmetic number, because the mean of its divisors is an integer number (124175689767).

Almost surely, 2^{1213212223102} is an apocalyptic number.

1213212223102 is a deficient number, since it is larger than the sum of its proper divisors (773598813170).

1213212223102 is a wasteful number, since it uses less digits than its factorization.

1213212223102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43185323.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1213212223102 its reverse (2013222123121), we get a palindrome (3226434346223).

The spelling of 1213212223102 in words is "one trillion, two hundred thirteen billion, two hundred twelve million, two hundred twenty-three thousand, one hundred two".