211201212405042 has 48 divisors (see below), whose sum is σ = 457878507989760. Its totient is φ = 70357963658400.

The previous prime is 211201212405037. The next prime is 211201212405097. The reversal of 211201212405042 is 240504212102112.

211201212405042 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 0 + 1 + 212 + 405 + 0 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 211201212404997 and 211201212405015.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1083091192 + ... + 1083286172.

It is an arithmetic number, because the mean of its divisors is an integer number (9539135583120).

Almost surely, 2^{211201212405042} is an apocalyptic number.

211201212405042 is an abundant number, since it is smaller than the sum of its proper divisors (246677295584718).

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

211201212405042 is a wasteful number, since it uses less digits than its factorization.

211201212405042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230959 (or 230956 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 211201212405042 its reverse (240504212102112), we get a palindrome (451705424507154).

The spelling of 211201212405042 in words is "two hundred eleven trillion, two hundred one billion, two hundred twelve million, four hundred five thousand, forty-two".