2121036370177 has 2 divisors, whose sum is σ = 2121036370178. Its totient is φ = 2121036370176.

The previous prime is 2121036370169. The next prime is 2121036370207. The reversal of 2121036370177 is 7710736301212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1625724451521 + 495311918656 = 1275039^2 + 703784^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121036370177 - 2³ = 2121036370169 is a prime.

It is a super-2 number, since 2×2121036370177² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2121036370577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060518185088 + 1060518185089.

It is an arithmetic number, because the mean of its divisors is an integer number (1060518185089).

Almost surely, 2^{2121036370177} is an apocalyptic number.

It is an amenable number.

2121036370177 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121036370177 is an equidigital number, since it uses as much as digits as its factorization.

2121036370177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088, while the sum is 40.

The spelling of 2121036370177 in words is "two trillion, one hundred twenty-one billion, thirty-six million, three hundred seventy thousand, one hundred seventy-seven".