211011202121149 has 2 divisors, whose sum is σ = 211011202121150. Its totient is φ = 211011202121148.

The previous prime is 211011202121051. The next prime is 211011202121171. The reversal of 211011202121149 is 941121202110112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115559963013924 + 95451239107225 = 10749882^2 + 9769915^2 .

It is a cyclic number.

It is not a de Polignac number, because 211011202121149 - 2¹³ = 211011202112957 is a prime.

It is a super-2 number, since 2×211011202121149² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211011202121189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505601060574 + 105505601060575.

It is an arithmetic number, because the mean of its divisors is an integer number (105505601060575).

Almost surely, 2^{211011202121149} is an apocalyptic number.

It is an amenable number.

211011202121149 is a deficient number, since it is larger than the sum of its proper divisors (1).

211011202121149 is an equidigital number, since it uses as much as digits as its factorization.

211011202121149 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 28.

The spelling of 211011202121149 in words is "two hundred eleven trillion, eleven billion, two hundred two million, one hundred twenty-one thousand, one hundred forty-nine".