210021210111204 has 96 divisors (see below), whose sum is σ = 544812730560000. Its totient is φ = 69966794465568.

The previous prime is 210021210111161. The next prime is 210021210111347. The reversal of 210021210111204 is 402111012120012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3698895687 + ... + 3698952465.

It is an arithmetic number, because the mean of its divisors is an integer number (5675132610000).

Almost surely, 2^{210021210111204} is an apocalyptic number.

It is an amenable number.

210021210111204 is an abundant number, since it is smaller than the sum of its proper divisors (334791520448796).

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

210021210111204 is a wasteful number, since it uses less digits than its factorization.

210021210111204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75894 (or 75886 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210021210111204 its reverse (402111012120012), we get a palindrome (612132222231216).

The spelling of 210021210111204 in words is "two hundred ten trillion, twenty-one billion, two hundred ten million, one hundred eleven thousand, two hundred four".