20403210212 has 72 divisors (see below), whose sum is σ = 47491903872. Its totient is φ = 7481675520.

The previous prime is 20403210199. The next prime is 20403210241. The reversal of 20403210212 is 21201230402.

It is a super-2 number, since 2×20403210212² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119528 + ... + 234719.

It is an arithmetic number, because the mean of its divisors is an integer number (659609776).

Almost surely, 2^20403210212 is an apocalyptic number.

20403210212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20403210212 is an abundant number, since it is smaller than the sum of its proper divisors (27088693660).

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

20403210212 is a wasteful number, since it uses less digits than its factorization.

20403210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354297 (or 354284 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20403210212 its reverse (21201230402), we get a palindrome (41604440614).

The spelling of 20403210212 in words is "twenty billion, four hundred three million, two hundred ten thousand, two hundred twelve".