22121102200201 has 4 divisors (see below), whose sum is σ = 22124614050000. Its totient is φ = 22117590350404.

The previous prime is 22121102200189. The next prime is 22121102200229. The reversal of 22121102200201 is 10200220112122.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121102200201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121102200261) 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, 1755915451 + ... + 1755928048.

It is an arithmetic number, because the mean of its divisors is an integer number (5531153512500).

Almost surely, 2^{22121102200201} is an apocalyptic number.

It is an amenable number.

22121102200201 is a deficient number, since it is larger than the sum of its proper divisors (3511849799).

22121102200201 is an equidigital number, since it uses as much as digits as its factorization.

22121102200201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511849798.

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

Adding to 22121102200201 its reverse (10200220112122), we get a palindrome (32321322312323).

The spelling of 22121102200201 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred two million, two hundred thousand, two hundred one".