22121430101 has 2 divisors, whose sum is σ = 22121430102. Its totient is φ = 22121430100.

The previous prime is 22121430091. The next prime is 22121430113. The reversal of 22121430101 is 10103412122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19147363876 + 2974066225 = 138374^2 + 54535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121430101 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22121430101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121430601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060715050 + 11060715051.

It is an arithmetic number, because the mean of its divisors is an integer number (11060715051).

Almost surely, 2^22121430101 is an apocalyptic number.

It is an amenable number.

22121430101 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121430101 is an equidigital number, since it uses as much as digits as its factorization.

22121430101 is an evil number, because the sum of its binary digits is even.

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

Adding to 22121430101 its reverse (10103412122), we get a palindrome (32224842223).

The spelling of 22121430101 in words is "twenty-two billion, one hundred twenty-one million, four hundred thirty thousand, one hundred one".