22121322101 has 4 divisors (see below), whose sum is σ = 22269787500. Its totient is φ = 21972856704.

The previous prime is 22121322077. The next prime is 22121322103. The reversal of 22121322101 is 10122312122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6379855876 + 15741466225 = 79874^2 + 125465^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121322101 - 2⁶ = 22121322037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22121322101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121322103) 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, 74232476 + ... + 74232773.

It is an arithmetic number, because the mean of its divisors is an integer number (5567446875).

Almost surely, 2^22121322101 is an apocalyptic number.

It is an amenable number.

22121322101 is a deficient number, since it is larger than the sum of its proper divisors (148465399).

22121322101 is a wasteful number, since it uses less digits than its factorization.

22121322101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148465398.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22121322101 its reverse (10122312122), we get a palindrome (32243634223).

The spelling of 22121322101 in words is "twenty-two billion, one hundred twenty-one million, three hundred twenty-two thousand, one hundred one".