21112041022201 has 2 divisors, whose sum is σ = 21112041022202. Its totient is φ = 21112041022200.

The previous prime is 21112041022199. The next prime is 21112041022271. The reversal of 21112041022201 is 10222014021112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20614106156176 + 497934866025 = 4540276^2 + 705645^2 .

It is a cyclic number.

It is not a de Polignac number, because 21112041022201 - 2¹ = 21112041022199 is a prime.

It is a super-2 number, since 2×21112041022201² (a number of 27 digits) contains 22 as substring.

Together with 21112041022199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21112041022271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556020511100 + 10556020511101.

It is an arithmetic number, because the mean of its divisors is an integer number (10556020511101).

Almost surely, 2^{21112041022201} is an apocalyptic number.

It is an amenable number.

21112041022201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112041022201 is an equidigital number, since it uses as much as digits as its factorization.

21112041022201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21112041022201 its reverse (10222014021112), we get a palindrome (31334055043313).

The spelling of 21112041022201 in words is "twenty-one trillion, one hundred twelve billion, forty-one million, twenty-two thousand, two hundred one".