11395858021 has 2 divisors, whose sum is σ = 11395858022. Its totient is φ = 11395858020.

The previous prime is 11395858003. The next prime is 11395858063. The reversal of 11395858021 is 12085859311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10244273796 + 1151584225 = 101214^2 + 33935^2 .

It is a cyclic number.

It is not a de Polignac number, because 11395858021 - 2⁵ = 11395857989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11395858321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5697929010 + 5697929011.

It is an arithmetic number, because the mean of its divisors is an integer number (5697929011).

Almost surely, 2^11395858021 is an apocalyptic number.

It is an amenable number.

11395858021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11395858021 is an equidigital number, since it uses as much as digits as its factorization.

11395858021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 43.

The spelling of 11395858021 in words is "eleven billion, three hundred ninety-five million, eight hundred fifty-eight thousand, twenty-one".