21120022001201 has 2 divisors, whose sum is σ = 21120022001202. Its totient is φ = 21120022001200.

The previous prime is 21120022001161. The next prime is 21120022001231. The reversal of 21120022001201 is 10210022002112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17030486493601 + 4089535507600 = 4126801^2 + 2022260^2 .

It is a cyclic number.

It is not a de Polignac number, because 21120022001201 - 2¹⁸ = 21120021739057 is a prime.

It is not a weakly prime, because it can be changed into another prime (21120022001231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560011000600 + 10560011000601.

It is an arithmetic number, because the mean of its divisors is an integer number (10560011000601).

Almost surely, 2^{21120022001201} is an apocalyptic number.

It is an amenable number.

21120022001201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120022001201 is an equidigital number, since it uses as much as digits as its factorization.

21120022001201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21120022001201 its reverse (10210022002112), we get a palindrome (31330044003313).

The spelling of 21120022001201 in words is "twenty-one trillion, one hundred twenty billion, twenty-two million, one thousand, two hundred one".