21035314297 has 2 divisors, whose sum is σ = 21035314298. Its totient is φ = 21035314296.

The previous prime is 21035314277. The next prime is 21035314369. The reversal of 21035314297 is 79241353012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12656475001 + 8378839296 = 112501^2 + 91536^2 .

It is a cyclic number.

It is not a de Polignac number, because 21035314297 - 2²⁷ = 20901096569 is a prime.

It is not a weakly prime, because it can be changed into another prime (21035314277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517657148 + 10517657149.

It is an arithmetic number, because the mean of its divisors is an integer number (10517657149).

Almost surely, 2^21035314297 is an apocalyptic number.

It is an amenable number.

21035314297 is a deficient number, since it is larger than the sum of its proper divisors (1).

21035314297 is an equidigital number, since it uses as much as digits as its factorization.

21035314297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 21035314297 in words is "twenty-one billion, thirty-five million, three hundred fourteen thousand, two hundred ninety-seven".