21357711119 has 2 divisors, whose sum is σ = 21357711120. Its totient is φ = 21357711118.

The previous prime is 21357711049. The next prime is 21357711161. The reversal of 21357711119 is 91111775312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21357711119 is a prime.

It is a super-2 number, since 2×21357711119² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21357711619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10678855559 + 10678855560.

It is an arithmetic number, because the mean of its divisors is an integer number (10678855560).

Almost surely, 2^21357711119 is an apocalyptic number.

21357711119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21357711119 is an equidigital number, since it uses as much as digits as its factorization.

21357711119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 38.

The spelling of 21357711119 in words is "twenty-one billion, three hundred fifty-seven million, seven hundred eleven thousand, one hundred nineteen".