20100010212 has 36 divisors (see below), whose sum is σ = 51019204236. Its totient is φ = 6672199680.

The previous prime is 20100010157. The next prime is 20100010243. The reversal of 20100010212 is 21201000102.

It can be written as a sum of positive squares in 2 ways, for example, as 13831171236 + 6268838976 = 117606^2 + 79176^2 .

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 = 20100010194 and 20100010203.

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, 1149693 + ... + 1167044.

Almost surely, 2^20100010212 is an apocalyptic number.

It is an amenable number.

20100010212 is an abundant number, since it is smaller than the sum of its proper divisors (30919194024).

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

20100010212 is a wasteful number, since it uses less digits than its factorization.

20100010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316988 (or 2316983 counting only the distinct ones).

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

Adding to 20100010212 its reverse (21201000102), we get a palindrome (41301010314).

The spelling of 20100010212 in words is "twenty billion, one hundred million, ten thousand, two hundred twelve".