212115313152520 has 32 divisors (see below), whose sum is σ = 477638532907200. Its totient is φ = 84778733560768.

The previous prime is 212115313152511. The next prime is 212115313152551. The reversal of 212115313152520 is 25251313511212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2105939644 + ... + 2106040363.

It is an arithmetic number, because the mean of its divisors is an integer number (14926204153350).

Almost surely, 2^{212115313152520} is an apocalyptic number.

212115313152520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212115313152520 is an abundant number, since it is smaller than the sum of its proper divisors (265523219754680).

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

212115313152520 is a wasteful number, since it uses less digits than its factorization.

212115313152520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4211981277 (or 4211981273 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

Adding to 212115313152520 its reverse (25251313511212), we get a palindrome (237366626663732).

The spelling of 212115313152520 in words is "two hundred twelve trillion, one hundred fifteen billion, three hundred thirteen million, one hundred fifty-two thousand, five hundred twenty".