20212112212 has 24 divisors (see below), whose sum is σ = 35651871360. Its totient is φ = 10026127680.

The previous prime is 20212112183. The next prime is 20212112213. The reversal of 20212112212 is 21221121202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212112213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275848 + ... + 341344.

It is an arithmetic number, because the mean of its divisors is an integer number (1485494640).

Almost surely, 2^20212112212 is an apocalyptic number.

It is an amenable number.

20212112212 is a deficient number, since it is larger than the sum of its proper divisors (15439759148).

20212112212 is a wasteful number, since it uses less digits than its factorization.

20212112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66111 (or 66109 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20212112212 its reverse (21221121202), we get a palindrome (41433233414).

The spelling of 20212112212 in words is "twenty billion, two hundred twelve million, one hundred twelve thousand, two hundred twelve".