21142102030193 has 2 divisors, whose sum is σ = 21142102030194. Its totient is φ = 21142102030192.

The previous prime is 21142102030141. The next prime is 21142102030201. The reversal of 21142102030193 is 39103020124112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17804289957169 + 3337812073024 = 4219513^2 + 1826968^2 .

It is a cyclic number.

It is not a de Polignac number, because 21142102030193 - 2¹⁶ = 21142101964657 is a prime.

It is not a weakly prime, because it can be changed into another prime (21142102035193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571051015096 + 10571051015097.

It is an arithmetic number, because the mean of its divisors is an integer number (10571051015097).

Almost surely, 2^{21142102030193} is an apocalyptic number.

It is an amenable number.

21142102030193 is a deficient number, since it is larger than the sum of its proper divisors (1).

21142102030193 is an equidigital number, since it uses as much as digits as its factorization.

21142102030193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 21142102030193 in words is "twenty-one trillion, one hundred forty-two billion, one hundred two million, thirty thousand, one hundred ninety-three".