221200211022 has 64 divisors (see below), whose sum is σ = 517459413504. Its totient is φ = 61718267520.

The previous prime is 221200210963. The next prime is 221200211039. The reversal of 221200211022 is 220112002122.

It is a junction number, because it is equal to n+sod(n) for n = 221200210992 and 221200211010.

It is a congruent number.

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, 13495272 + ... + 13511652.

It is an arithmetic number, because the mean of its divisors is an integer number (8085303336).

Almost surely, 2^221200211022 is an apocalyptic number.

221200211022 is an abundant number, since it is smaller than the sum of its proper divisors (296259202482).

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

221200211022 is a wasteful number, since it uses less digits than its factorization.

221200211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23913.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221200211022 its reverse (220112002122), we get a palindrome (441312213144).

The spelling of 221200211022 in words is "two hundred twenty-one billion, two hundred million, two hundred eleven thousand, twenty-two".