22121232101 has 2 divisors, whose sum is σ = 22121232102. Its totient is φ = 22121232100.

The previous prime is 22121232071. The next prime is 22121232113. The reversal of 22121232101 is 10123212122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22119423076 + 1809025 = 148726^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121232101 - 2⁶ = 22121232037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22121232101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121232131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060616050 + 11060616051.

It is an arithmetic number, because the mean of its divisors is an integer number (11060616051).

Almost surely, 2^22121232101 is an apocalyptic number.

It is an amenable number.

22121232101 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121232101 is an equidigital number, since it uses as much as digits as its factorization.

22121232101 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 22121232101 its reverse (10123212122), we get a palindrome (32244444223).

The spelling of 22121232101 in words is "twenty-two billion, one hundred twenty-one million, two hundred thirty-two thousand, one hundred one".