212540515253 has 16 divisors (see below), whose sum is σ = 238891550400. Its totient is φ = 187442935680.

The previous prime is 212540515223. The next prime is 212540515259. The reversal of 212540515253 is 352515045212.

It is a happy number.

It is not a de Polignac number, because 212540515253 - 2⁸ = 212540514997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212540515259) 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, 1996223 + ... + 2099996.

It is an arithmetic number, because the mean of its divisors is an integer number (14930721900).

Almost surely, 2^212540515253 is an apocalyptic number.

It is an amenable number.

212540515253 is a deficient number, since it is larger than the sum of its proper divisors (26351035147).

212540515253 is a wasteful number, since it uses less digits than its factorization.

212540515253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096372.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 212540515253 in words is "two hundred twelve billion, five hundred forty million, five hundred fifteen thousand, two hundred fifty-three".