20101000212 has 36 divisors (see below), whose sum is σ = 52184131636. Its totient is φ = 6519242880.

The previous prime is 20101000207. The next prime is 20101000223. The reversal of 20101000212 is 21200010102.

It can be written as a sum of positive squares in 2 ways, for example, as 17067854736 + 3033145476 = 130644^2 + 55074^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20101000194 and 20101000203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7544089 + ... + 7546752.

Almost surely, 2^20101000212 is an apocalyptic number.

It is an amenable number.

20101000212 is an abundant number, since it is smaller than the sum of its proper divisors (32083131424).

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

20101000212 is a wasteful number, since it uses less digits than its factorization.

20101000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15090888 (or 15090883 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20101000212 its reverse (21200010102), we get a palindrome (41301010314).

The spelling of 20101000212 in words is "twenty billion, one hundred one million, two hundred twelve", and thus it is an aban number.