202221121220010 has 192 divisors, whose sum is σ = 534795886460160. Its totient is φ = 53009026560000.

The previous prime is 202221121219991. The next prime is 202221121220119. The reversal of 202221121220010 is 10022121122202.

It is a happy number.

202221121220010 is a `hidden beast` number, since 20 + 2 + 221 + 1 + 212 + 200 + 10 = 666.

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 95 ways as a sum of consecutive naturals, for example, 1026607930 + ... + 1026804890.

It is an arithmetic number, because the mean of its divisors is an integer number (2785395241980).

Almost surely, 2^{202221121220010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202221121220010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267397943230080).

202221121220010 is an abundant number, since it is smaller than the sum of its proper divisors (332574765240150).

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

202221121220010 is a wasteful number, since it uses less digits than its factorization.

202221121220010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197885 (or 197882 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202221121220010 its reverse (10022121122202), we get a palindrome (212243242342212).

The spelling of 202221121220010 in words is "two hundred two trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred twenty thousand, ten".