20100201212 has 36 divisors (see below), whose sum is σ = 44065831320. Its totient is φ = 7951726944.

The previous prime is 20100201211. The next prime is 20100201229. The reversal of 20100201212 is 21210200102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20100201193 and 20100201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100201211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3941762 + ... + 3946857.

It is an arithmetic number, because the mean of its divisors is an integer number (1224050870).

Almost surely, 2^20100201212 is an apocalyptic number.

It is an amenable number.

20100201212 is an abundant number, since it is smaller than the sum of its proper divisors (23965630108).

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

20100201212 is a wasteful number, since it uses less digits than its factorization.

20100201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7888650 (or 7888641 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20100201212 its reverse (21210200102), we get a palindrome (41310401314).

The spelling of 20100201212 in words is "twenty billion, one hundred million, two hundred one thousand, two hundred twelve".