315210210512126 has 4 divisors (see below), whose sum is σ = 472815315768192. Its totient is φ = 157605105256062.

The previous prime is 315210210511943. The next prime is 315210210512147. The reversal of 315210210512126 is 621215012012513.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×315210210512126² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315210210512092 and 315210210512101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78802552628030 + ... + 78802552628033.

It is an arithmetic number, because the mean of its divisors is an integer number (118203828942048).

Almost surely, 2^{315210210512126} is an apocalyptic number.

315210210512126 is a deficient number, since it is larger than the sum of its proper divisors (157605105256066).

315210210512126 is a wasteful number, since it uses less digits than its factorization.

315210210512126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157605105256065.

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 315210210512126 its reverse (621215012012513), we get a palindrome (936425222524639).

The spelling of 315210210512126 in words is "three hundred fifteen trillion, two hundred ten billion, two hundred ten million, five hundred twelve thousand, one hundred twenty-six".