22021223101 has 4 divisors (see below), whose sum is σ = 22106909052. Its totient is φ = 21935537152.

The previous prime is 22021223083. The next prime is 22021223129. The reversal of 22021223101 is 10132212022.

It is a happy number.

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 20043197476 + 1978025625 = 141574^2 + 44475^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021223101 - 2²⁷ = 21887005373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021223701) 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, 42842590 + ... + 42843103.

It is an arithmetic number, because the mean of its divisors is an integer number (5526727263).

Almost surely, 2^22021223101 is an apocalyptic number.

It is an amenable number.

22021223101 is a deficient number, since it is larger than the sum of its proper divisors (85685951).

22021223101 is an equidigital number, since it uses as much as digits as its factorization.

22021223101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85685950.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22021223101 its reverse (10132212022), we get a palindrome (32153435123).

The spelling of 22021223101 in words is "twenty-two billion, twenty-one million, two hundred twenty-three thousand, one hundred one".