221000220210204 has 36 divisors (see below), whose sum is σ = 558639904955496. Its totient is φ = 73666679486688.

The previous prime is 221000220210149. The next prime is 221000220210271. The reversal of 221000220210204 is 402012022000122.

221000220210204 is a `hidden beast` number, since 2 + 210 + 0 + 0 + 220 + 210 + 20 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71985442 + ... + 74992694.

Almost surely, 2^{221000220210204} is an apocalyptic number.

It is an amenable number.

221000220210204 is an abundant number, since it is smaller than the sum of its proper divisors (337639684745292).

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

221000220210204 is a wasteful number, since it uses less digits than its factorization.

221000220210204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5048626 (or 5048621 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221000220210204 its reverse (402012022000122), we get a palindrome (623012242210326).

The spelling of 221000220210204 in words is "two hundred twenty-one trillion, two hundred twenty million, two hundred ten thousand, two hundred four".