20211212210 has 32 divisors (see below), whose sum is σ = 41611802112. Its totient is φ = 6923816640.

The previous prime is 20211212207. The next prime is 20211212227. The reversal of 20211212210 is 1221211202.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34106 + ... + 203925.

It is an arithmetic number, because the mean of its divisors is an integer number (1300368816).

Almost surely, 2^20211212210 is an apocalyptic number.

20211212210 is an abundant number, since it is smaller than the sum of its proper divisors (21400589902).

20211212210 is a wasteful number, since it uses less digits than its factorization.

20211212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239258.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20211212210 its reverse (1221211202), we get a palindrome (21432423412).

The spelling of 20211212210 in words is "twenty billion, two hundred eleven million, two hundred twelve thousand, two hundred ten".