221022022101 has 4 divisors (see below), whose sum is σ = 294696029472. Its totient is φ = 147348014732.

The previous prime is 221022022099. The next prime is 221022022129. The reversal of 221022022101 is 101220220122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221022022101 - 2¹ = 221022022099 is a prime.

It is a super-2 number, since 2×221022022101² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221022022601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36837003681 + ... + 36837003686.

It is an arithmetic number, because the mean of its divisors is an integer number (73674007368).

Almost surely, 2^221022022101 is an apocalyptic number.

It is an amenable number.

221022022101 is a deficient number, since it is larger than the sum of its proper divisors (73674007371).

221022022101 is an equidigital number, since it uses as much as digits as its factorization.

221022022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73674007370.

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

Adding to 221022022101 its reverse (101220220122), we get a palindrome (322242242223).

The spelling of 221022022101 in words is "two hundred twenty-one billion, twenty-two million, twenty-two thousand, one hundred one".