20013012212 has 12 divisors (see below), whose sum is σ = 35683578756. Its totient is φ = 9817704000.

The previous prime is 20013012211. The next prime is 20013012277. The reversal of 20013012212 is 21221031002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17863391716 + 2149620496 = 133654^2 + 46364^2 .

It is a super-2 number, since 2×20013012212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013012211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47200289 + ... + 47200712.

It is an arithmetic number, because the mean of its divisors is an integer number (2973631563).

Almost surely, 2^20013012212 is an apocalyptic number.

It is an amenable number.

20013012212 is a deficient number, since it is larger than the sum of its proper divisors (15670566544).

20013012212 is a wasteful number, since it uses less digits than its factorization.

20013012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94401058 (or 94401056 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20013012212 its reverse (21221031002), we get a palindrome (41234043214).

The spelling of 20013012212 in words is "twenty billion, thirteen million, twelve thousand, two hundred twelve".