20212136 has 32 divisors (see below), whose sum is σ = 43501440. Its totient is φ = 8624448.

The previous prime is 20212117. The next prime is 20212151. The reversal of 20212136 is 63121202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14861 + ... + 16163.

It is an arithmetic number, because the mean of its divisors is an integer number (1359420).

Almost surely, 2^20212136 is an apocalyptic number.

It is an amenable number.

20212136 is an abundant number, since it is smaller than the sum of its proper divisors (23289304).

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

20212136 is a wasteful number, since it uses less digits than its factorization.

20212136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20212136 is about 4495.7909204054. The cubic root of 20212136 is about 272.3980978575.

Adding to 20212136 its reverse (63121202), we get a palindrome (83333338).

The spelling of 20212136 in words is "twenty million, two hundred twelve thousand, one hundred thirty-six".