1222881737812 has 48 divisors (see below), whose sum is σ = 2484005086080. Its totient is φ = 515908495872.

The previous prime is 1222881737797. The next prime is 1222881737863. The reversal of 1222881737812 is 2187371882221.

It is a super-2 number, since 2×1222881737812² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1222881737812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2460864 + ... + 2915752.

It is an arithmetic number, because the mean of its divisors is an integer number (51750105960).

Almost surely, 2^{1222881737812} is an apocalyptic number.

It is an amenable number.

1222881737812 is an abundant number, since it is smaller than the sum of its proper divisors (1261123348268).

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

1222881737812 is a wasteful number, since it uses less digits than its factorization.

1222881737812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456400 (or 456398 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 52.

The spelling of 1222881737812 in words is "one trillion, two hundred twenty-two billion, eight hundred eighty-one million, seven hundred thirty-seven thousand, eight hundred twelve".