20201212104 has 16 divisors (see below), whose sum is σ = 50503030320. Its totient is φ = 6733737360.

The previous prime is 20201212099. The next prime is 20201212117. The reversal of 20201212104 is 40121210202.

It is a super-2 number, since 2×20201212104² (a number of 21 digits) contains 22 as substring.

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, 420858562 + ... + 420858609.

It is an arithmetic number, because the mean of its divisors is an integer number (3156439395).

Almost surely, 2^20201212104 is an apocalyptic number.

20201212104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20201212104 is an abundant number, since it is smaller than the sum of its proper divisors (30301818216).

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

20201212104 is a wasteful number, since it uses less digits than its factorization.

20201212104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841717180 (or 841717176 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20201212104 its reverse (40121210202), we get a palindrome (60322422306).

The spelling of 20201212104 in words is "twenty billion, two hundred one million, two hundred twelve thousand, one hundred four".