210001211212 has 192 divisors, whose sum is σ = 430928999424. Its totient is φ = 88792704000.

The previous prime is 210001211209. The next prime is 210001211237. The reversal of 210001211212 is 212112100012.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 210001211192 and 210001211201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 836658087 + ... + 836658337.

It is an arithmetic number, because the mean of its divisors is an integer number (2244421872).

Almost surely, 2^210001211212 is an apocalyptic number.

It is an amenable number.

210001211212 is an abundant number, since it is smaller than the sum of its proper divisors (220927788212).

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

210001211212 is a wasteful number, since it uses less digits than its factorization.

210001211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210001211212 its reverse (212112100012), we get a palindrome (422113311224).

The spelling of 210001211212 in words is "two hundred ten billion, one million, two hundred eleven thousand, two hundred twelve".