42051222031212 has 36 divisors (see below), whose sum is σ = 106852668913536. Its totient is φ = 13943686186080.

The previous prime is 42051222031199. The next prime is 42051222031213. The reversal of 42051222031212 is 21213022215024.

42051222031212 is a `hidden beast` number, since 4 + 2 + 0 + 512 + 2 + 20 + 3 + 121 + 2 = 666.

42051222031212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (42051222031213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3057819043 + ... + 3057832794.

Almost surely, 2^{42051222031212} is an apocalyptic number.

It is an amenable number.

42051222031212 is an abundant number, since it is smaller than the sum of its proper divisors (64801446882324).

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

42051222031212 is a wasteful number, since it uses less digits than its factorization.

42051222031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6115652038 (or 6115652033 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 42051222031212 its reverse (21213022215024), we get a palindrome (63264244246236).

The spelling of 42051222031212 in words is "forty-two trillion, fifty-one billion, two hundred twenty-two million, thirty-one thousand, two hundred twelve".