1222310203212 has 72 divisors (see below), whose sum is σ = 3354976784880. Its totient is φ = 345307522560.

The previous prime is 1222310203193. The next prime is 1222310203229. The reversal of 1222310203212 is 2123020132221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11626089 + ... + 11730752.

It is an arithmetic number, because the mean of its divisors is an integer number (46596899790).

Almost surely, 2^{1222310203212} is an apocalyptic number.

1222310203212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222310203212 is an abundant number, since it is smaller than the sum of its proper divisors (2132666581668).

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

1222310203212 is a wasteful number, since it uses less digits than its factorization.

1222310203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23356951 (or 23356942 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1222310203212 its reverse (2123020132221), we get a palindrome (3345330335433).

The spelling of 1222310203212 in words is "one trillion, two hundred twenty-two billion, three hundred ten million, two hundred three thousand, two hundred twelve".