22121202113 has 2 divisors, whose sum is σ = 22121202114. Its totient is φ = 22121202112.

The previous prime is 22121202107. The next prime is 22121202127. The reversal of 22121202113 is 31120212122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20976597889 + 1144604224 = 144833^2 + 33832^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121202113 - 2⁴ = 22121202097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22121202091 and 22121202100.

It is not a weakly prime, because it can be changed into another prime (22121204113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060601056 + 11060601057.

It is an arithmetic number, because the mean of its divisors is an integer number (11060601057).

Almost surely, 2^22121202113 is an apocalyptic number.

It is an amenable number.

22121202113 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121202113 is an equidigital number, since it uses as much as digits as its factorization.

22121202113 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 22121202113 its reverse (31120212122), we get a palindrome (53241414235).

The spelling of 22121202113 in words is "twenty-two billion, one hundred twenty-one million, two hundred two thousand, one hundred thirteen".