221120222221101 has 32 divisors (see below), whose sum is σ = 343825958016000. Its totient is φ = 126352785825840.

The previous prime is 221120222221057. The next prime is 221120222221127. The reversal of 221120222221101 is 101122222021122.

It is not a de Polignac number, because 221120222221101 - 2¹⁰ = 221120222220077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120222241101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80954986 + ... + 83641796.

It is an arithmetic number, because the mean of its divisors is an integer number (10744561188000).

Almost surely, 2^{221120222221101} is an apocalyptic number.

221120222221101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221120222221101 is a deficient number, since it is larger than the sum of its proper divisors (122705735794899).

221120222221101 is an equidigital number, since it uses as much as digits as its factorization.

221120222221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766814 (or 2766800 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221120222221101 its reverse (101122222021122), we get a palindrome (322242444242223).

The spelling of 221120222221101 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred one".