21211002201149 has 2 divisors, whose sum is σ = 21211002201150. Its totient is φ = 21211002201148.

The previous prime is 21211002201113. The next prime is 21211002201239. The reversal of 21211002201149 is 94110220011212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21121791264025 + 89210937124 = 4595845^2 + 298682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21211002201149 is a prime.

It is a super-2 number, since 2×21211002201149² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21211002207149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605501100574 + 10605501100575.

It is an arithmetic number, because the mean of its divisors is an integer number (10605501100575).

Almost surely, 2^{21211002201149} is an apocalyptic number.

It is an amenable number.

21211002201149 is a deficient number, since it is larger than the sum of its proper divisors (1).

21211002201149 is an equidigital number, since it uses as much as digits as its factorization.

21211002201149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 21211002201149 in words is "twenty-one trillion, two hundred eleven billion, two million, two hundred one thousand, one hundred forty-nine".