221101221201022 has 16 divisors (see below), whose sum is σ = 332802192829680. Its totient is φ = 110167198747072.

The previous prime is 221101221201001. The next prime is 221101221201023. The reversal of 221101221201022 is 220102122101122.

It is a super-2 number, since 2×221101221201022² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221101221201023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136098 + ... + 21029050.

It is an arithmetic number, because the mean of its divisors is an integer number (20800137051855).

Almost surely, 2^{221101221201022} is an apocalyptic number.

221101221201022 is a deficient number, since it is larger than the sum of its proper divisors (111700971628658).

221101221201022 is a wasteful number, since it uses less digits than its factorization.

221101221201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20911307.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221101221201022 its reverse (220102122101122), we get a palindrome (441203343302144).

The spelling of 221101221201022 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twenty-one million, two hundred one thousand, twenty-two".