1215125534322 has 96 divisors (see below), whose sum is σ = 3067076233728. Its totient is φ = 340470119808.

The previous prime is 1215125534321. The next prime is 1215125534323. The reversal of 1215125534322 is 2234355215121.

1215125534322 is a `hidden beast` number, since 1 + 2 + 1 + 51 + 255 + 34 + 322 = 666.

It is an interprime number because it is at equal distance from previous prime (1215125534321) and next prime (1215125534323).

It is a super-2 number, since 2×1215125534322² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1215125534321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14737303 + ... + 14819525.

It is an arithmetic number, because the mean of its divisors is an integer number (31948710768).

Almost surely, 2^{1215125534322} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215125534322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533538116864).

1215125534322 is an abundant number, since it is smaller than the sum of its proper divisors (1851950699406).

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

1215125534322 is a wasteful number, since it uses less digits than its factorization.

1215125534322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84504 (or 84501 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The spelling of 1215125534322 in words is "one trillion, two hundred fifteen billion, one hundred twenty-five million, five hundred thirty-four thousand, three hundred twenty-two".