3555340992121 has 2 divisors, whose sum is σ = 3555340992122. Its totient is φ = 3555340992120.

The previous prime is 3555340991999. The next prime is 3555340992139. The reversal of 3555340992121 is 1212990435553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3542977998400 + 12362993721 = 1882280^2 + 111189^2 .

It is a cyclic number.

It is not a de Polignac number, because 3555340992121 - 2²⁷ = 3555206774393 is a prime.

It is not a weakly prime, because it can be changed into another prime (3555340992421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1777670496060 + 1777670496061.

It is an arithmetic number, because the mean of its divisors is an integer number (1777670496061).

Almost surely, 2^{3555340992121} is an apocalyptic number.

It is an amenable number.

3555340992121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3555340992121 is an equidigital number, since it uses as much as digits as its factorization.

3555340992121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458000, while the sum is 49.

The spelling of 3555340992121 in words is "three trillion, five hundred fifty-five billion, three hundred forty million, nine hundred ninety-two thousand, one hundred twenty-one".