210021211111012 has 48 divisors (see below), whose sum is σ = 432037850349952. Its totient is φ = 87460333148160.

The previous prime is 210021211111001. The next prime is 210021211111099. The reversal of 210021211111012 is 210111112120012.

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, 451674939 + ... + 452139682.

Almost surely, 2^{210021211111012} is an apocalyptic number.

It is an amenable number.

210021211111012 is an abundant number, since it is smaller than the sum of its proper divisors (222016639238940).

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

210021211111012 is a wasteful number, since it uses less digits than its factorization.

210021211111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903814868 (or 903814866 counting only the distinct ones).

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

Adding to 210021211111012 its reverse (210111112120012), we get a palindrome (420132323231024).

The spelling of 210021211111012 in words is "two hundred ten trillion, twenty-one billion, two hundred eleven million, one hundred eleven thousand, twelve".