211525421355042 has 16 divisors (see below), whose sum is σ = 434484649270272. Its totient is φ = 68602839358320.

The previous prime is 211525421355041. The next prime is 211525421355067. The reversal of 211525421355042 is 240553124525112.

It is a junction number, because it is equal to n+sod(n) for n = 211525421354985 and 211525421355003.

It is not an unprimeable number, because it can be changed into a prime (211525421355041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476408606434 + ... + 476408606877.

It is an arithmetic number, because the mean of its divisors is an integer number (27155290579392).

Almost surely, 2^{211525421355042} is an apocalyptic number.

211525421355042 is an abundant number, since it is smaller than the sum of its proper divisors (222959227915230).

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

211525421355042 is a wasteful number, since it uses less digits than its factorization.

211525421355042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952817213353.

The product of its (nonzero) digits is 480000, while the sum is 42.

The spelling of 211525421355042 in words is "two hundred eleven trillion, five hundred twenty-five billion, four hundred twenty-one million, three hundred fifty-five thousand, forty-two".