20212536091 has 32 divisors (see below), whose sum is σ = 24249876480. Its totient is φ = 16630336800.

The previous prime is 20212536089. The next prime is 20212536101. The reversal of 20212536091 is 19063521202.

It is not a de Polignac number, because 20212536091 - 2¹ = 20212536089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212536191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4761616 + ... + 4765858.

It is an arithmetic number, because the mean of its divisors is an integer number (757808640).

Almost surely, 2^20212536091 is an apocalyptic number.

20212536091 is a deficient number, since it is larger than the sum of its proper divisors (4037340389).

20212536091 is a wasteful number, since it uses less digits than its factorization.

20212536091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5287.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 20212536091 in words is "twenty billion, two hundred twelve million, five hundred thirty-six thousand, ninety-one".