211210121211212 has 24 divisors (see below), whose sum is σ = 377490351684096. Its totient is φ = 103355835407888.

The previous prime is 211210121211203. The next prime is 211210121211251. The reversal of 211210121211212 is 212112121012112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4096088 + ... + 20957055.

It is an arithmetic number, because the mean of its divisors is an integer number (15728764653504).

Almost surely, 2^{211210121211212} is an apocalyptic number.

It is an amenable number.

211210121211212 is a deficient number, since it is larger than the sum of its proper divisors (166280230472884).

211210121211212 is a wasteful number, since it uses less digits than its factorization.

211210121211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25098037 (or 25098035 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211210121211212 its reverse (212112121012112), we get a palindrome (423322242223324).

The spelling of 211210121211212 in words is "two hundred eleven trillion, two hundred ten billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twelve".