12212951520 has 384 divisors, whose sum is σ = 48758879232. Its totient is φ = 2495692800.

The previous prime is 12212951503. The next prime is 12212951563. The reversal of 12212951520 is 2515921221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2251852 + ... + 2257268.

It is an arithmetic number, because the mean of its divisors is an integer number (126976248).

Almost surely, 2^12212951520 is an apocalyptic number.

12212951520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12212951520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24379439616).

12212951520 is an abundant number, since it is smaller than the sum of its proper divisors (36545927712).

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

12212951520 is a wasteful number, since it uses less digits than its factorization.

12212951520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514 (or 5506 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The spelling of 12212951520 in words is "twelve billion, two hundred twelve million, nine hundred fifty-one thousand, five hundred twenty".