21130303953192 has 128 divisors (see below), whose sum is σ = 60757198709760. Its totient is φ = 5998757253120.

The previous prime is 21130303953067. The next prime is 21130303953211. The reversal of 21130303953192 is 29135930303112.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117195592 + ... + 117375752.

It is an arithmetic number, because the mean of its divisors is an integer number (474665614920).

Almost surely, 2^{21130303953192} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21130303953192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30378599354880).

21130303953192 is an abundant number, since it is smaller than the sum of its proper divisors (39626894756568).

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

21130303953192 is a wasteful number, since it uses less digits than its factorization.

21130303953192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184623 (or 184619 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 42.

The spelling of 21130303953192 in words is "twenty-one trillion, one hundred thirty billion, three hundred three million, nine hundred fifty-three thousand, one hundred ninety-two".