202112134212021 has 16 divisors (see below), whose sum is σ = 294010413856320. Its totient is φ = 122480065998720.

The previous prime is 202112134211989. The next prime is 202112134212029. The reversal of 202112134212021 is 120212431211202.

It is not a de Polignac number, because 202112134212021 - 2⁵ = 202112134211989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202112134211982 and 202112134212000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202112134212029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303075736 + ... + 303741873.

It is an arithmetic number, because the mean of its divisors is an integer number (18375650866020).

Almost surely, 2^{202112134212021} is an apocalyptic number.

It is an amenable number.

202112134212021 is a deficient number, since it is larger than the sum of its proper divisors (91898279644299).

202112134212021 is a wasteful number, since it uses less digits than its factorization.

202112134212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606827716.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 202112134212021 its reverse (120212431211202), we get a palindrome (322324565423223).

The spelling of 202112134212021 in words is "two hundred two trillion, one hundred twelve billion, one hundred thirty-four million, two hundred twelve thousand, twenty-one".