22012100121001 has 2 divisors, whose sum is σ = 22012100121002. Its totient is φ = 22012100121000.

The previous prime is 22012100120993. The next prime is 22012100121007. The reversal of 22012100121001 is 10012100121022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15018725160000 + 6993374961001 = 3875400^2 + 2644499^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012100121001 - 2³ = 22012100120993 is a prime.

It is not a weakly prime, because it can be changed into another prime (22012100121007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006050060500 + 11006050060501.

It is an arithmetic number, because the mean of its divisors is an integer number (11006050060501).

Almost surely, 2^{22012100121001} is an apocalyptic number.

It is an amenable number.

22012100121001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012100121001 is an equidigital number, since it uses as much as digits as its factorization.

22012100121001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22012100121001 its reverse (10012100121022), we get a palindrome (32024200242023).

The spelling of 22012100121001 in words is "twenty-two trillion, twelve billion, one hundred million, one hundred twenty-one thousand, one".