20130312212 has 12 divisors (see below), whose sum is σ = 35341322016. Its totient is φ = 10032791640.

The previous prime is 20130312161. The next prime is 20130312227. The reversal of 20130312212 is 21221303102.

It is a super-3 number, since 3×20130312212³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8089718 + ... + 8092205.

It is an arithmetic number, because the mean of its divisors is an integer number (2945110168).

Almost surely, 2^20130312212 is an apocalyptic number.

It is an amenable number.

20130312212 is a deficient number, since it is larger than the sum of its proper divisors (15211009804).

20130312212 is a wasteful number, since it uses less digits than its factorization.

20130312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16182238 (or 16182236 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20130312212 its reverse (21221303102), we get a palindrome (41351615314).

The spelling of 20130312212 in words is "twenty billion, one hundred thirty million, three hundred twelve thousand, two hundred twelve".