1213222402320 has 80 divisors (see below), whose sum is σ = 3761452501632. Its totient is φ = 323486141440.

The previous prime is 1213222402313. The next prime is 1213222402333. The reversal of 1213222402320 is 232042223121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1213222402320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1668364 + ... + 2282516.

Almost surely, 2^{1213222402320} is an apocalyptic number.

1213222402320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213222402320 is an abundant number, since it is smaller than the sum of its proper divisors (2548230099312).

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

1213222402320 is a wasteful number, since it uses less digits than its factorization.

1213222402320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622400 (or 622394 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1213222402320 its reverse (232042223121), we get a palindrome (1445264625441).

The spelling of 1213222402320 in words is "one trillion, two hundred thirteen billion, two hundred twenty-two million, four hundred two thousand, three hundred twenty".