210221012012212 has 24 divisors (see below), whose sum is σ = 368894205290240. Its totient is φ = 104822675436960.

The previous prime is 210221012012203. The next prime is 210221012012239. The reversal of 210221012012212 is 212210210122012.

It is a self number, because there is not a number n which added to its sum of digits gives 210221012012212.

It is a congruent 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, 111394162 + ... + 113265622.

Almost surely, 2^{210221012012212} is an apocalyptic number.

It is an amenable number.

210221012012212 is a deficient number, since it is larger than the sum of its proper divisors (158673193278028).

210221012012212 is a wasteful number, since it uses less digits than its factorization.

210221012012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948351 (or 1948349 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210221012012212 its reverse (212210210122012), we get a palindrome (422431222134224).

The spelling of 210221012012212 in words is "two hundred ten trillion, two hundred twenty-one billion, twelve million, twelve thousand, two hundred twelve".