1012305542521 has 16 divisors (see below), whose sum is σ = 1250317070464. Its totient is φ = 798114829824.

The previous prime is 1012305542497. The next prime is 1012305542551. The reversal of 1012305542521 is 1252455032101.

It is not a de Polignac number, because 1012305542521 - 2¹³ = 1012305534329 is a prime.

It is a super-2 number, since 2×1012305542521² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1012305542551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19628376 + ... + 19679881.

It is an arithmetic number, because the mean of its divisors is an integer number (78144816904).

Almost surely, 2^{1012305542521} is an apocalyptic number.

It is an amenable number.

1012305542521 is a deficient number, since it is larger than the sum of its proper divisors (238011527943).

1012305542521 is a wasteful number, since it uses less digits than its factorization.

1012305542521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39308560.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 1012305542521 in words is "one trillion, twelve billion, three hundred five million, five hundred forty-two thousand, five hundred twenty-one".