2101122021149 has 2 divisors, whose sum is σ = 2101122021150. Its totient is φ = 2101122021148.

The previous prime is 2101122021101. The next prime is 2101122021179. The reversal of 2101122021149 is 9411202211012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1619111188249 + 482010832900 = 1272443^2 + 694270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101122021149 - 2¹² = 2101122017053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101122021179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050561010574 + 1050561010575.

It is an arithmetic number, because the mean of its divisors is an integer number (1050561010575).

Almost surely, 2^{2101122021149} is an apocalyptic number.

It is an amenable number.

2101122021149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101122021149 is an equidigital number, since it uses as much as digits as its factorization.

2101122021149 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 2101122021149 in words is "two trillion, one hundred one billion, one hundred twenty-two million, twenty-one thousand, one hundred forty-nine".