221202221012010 has 96 divisors (see below), whose sum is σ = 675051102340992. Its totient is φ = 49194007447680.

The previous prime is 221202221012009. The next prime is 221202221012021. The reversal of 221202221012010 is 10210122202122.

It is a happy number.

221202221012010 is a `hidden beast` number, since 22 + 120 + 222 + 101 + 201 + 0 = 666.

221202221012010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221202221012010² (a number of 29 digits) contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 4744769076 + ... + 4744815695.

It is an arithmetic number, because the mean of its divisors is an integer number (7031782316052).

Almost surely, 2^{221202221012010} is an apocalyptic number.

221202221012010 is an abundant number, since it is smaller than the sum of its proper divisors (453848881328982).

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

221202221012010 is a wasteful number, since it uses less digits than its factorization.

221202221012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9489584828 (or 9489584825 counting only the distinct ones).

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

Adding to 221202221012010 its reverse (10210122202122), we get a palindrome (231412343214132).

The spelling of 221202221012010 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred twenty-one million, twelve thousand, ten".