1213012210320 has 80 divisors (see below), whose sum is σ = 4178153176320. Its totient is φ = 323469922176.

The previous prime is 1213012210231. The next prime is 1213012210439. The reversal of 1213012210320 is 230122103121.

1213012210320 is a `hidden beast` number, since 1 + 2 + 130 + 1 + 2 + 210 + 320 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1213012210293 and 1213012210302.

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, 280787704 + ... + 280792023.

It is an arithmetic number, because the mean of its divisors is an integer number (52226914704).

Almost surely, 2^{1213012210320} is an apocalyptic number.

1213012210320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213012210320 is an abundant number, since it is smaller than the sum of its proper divisors (2965140966000).

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

1213012210320 is a wasteful number, since it uses less digits than its factorization.

1213012210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561579749 (or 561579737 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1213012210320 its reverse (230122103121), we get a palindrome (1443134313441).

The spelling of 1213012210320 in words is "one trillion, two hundred thirteen billion, twelve million, two hundred ten thousand, three hundred twenty".