2121002113193 has 2 divisors, whose sum is σ = 2121002113194. Its totient is φ = 2121002113192.

The previous prime is 2121002113171. The next prime is 2121002113259. The reversal of 2121002113193 is 3913112001212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1513657774864 + 607344338329 = 1230308^2 + 779323^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121002113193 - 2²² = 2120997918889 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121002113103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060501056596 + 1060501056597.

It is an arithmetic number, because the mean of its divisors is an integer number (1060501056597).

Almost surely, 2^{2121002113193} is an apocalyptic number.

It is an amenable number.

2121002113193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121002113193 is an equidigital number, since it uses as much as digits as its factorization.

2121002113193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 2121002113193 in words is "two trillion, one hundred twenty-one billion, two million, one hundred thirteen thousand, one hundred ninety-three".