221122012201 has 4 divisors (see below), whose sum is σ = 221149526400. Its totient is φ = 221094498004.

The previous prime is 221122012183. The next prime is 221122012261. The reversal of 221122012201 is 102210221122.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 102210221122 = 2 ⋅51105110561.

It is a cyclic number.

It is not a de Polignac number, because 221122012201 - 2¹⁵ = 221121979433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221122012261) 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, 13745041 + ... + 13761118.

It is an arithmetic number, because the mean of its divisors is an integer number (55287381600).

Almost surely, 2^221122012201 is an apocalyptic number.

It is an amenable number.

221122012201 is a deficient number, since it is larger than the sum of its proper divisors (27514199).

221122012201 is an equidigital number, since it uses as much as digits as its factorization.

221122012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27514198.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221122012201 its reverse (102210221122), we get a palindrome (323332233323).

The spelling of 221122012201 in words is "two hundred twenty-one billion, one hundred twenty-two million, twelve thousand, two hundred one".