21372185119 has 2 divisors, whose sum is σ = 21372185120. Its totient is φ = 21372185118.

The previous prime is 21372185099. The next prime is 21372185141. The reversal of 21372185119 is 91158127312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21372185119 - 2¹³ = 21372176927 is a prime.

It is a super-2 number, since 2×21372185119² (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 (21372189119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10686092559 + 10686092560.

It is an arithmetic number, because the mean of its divisors is an integer number (10686092560).

Almost surely, 2^21372185119 is an apocalyptic number.

21372185119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21372185119 is an equidigital number, since it uses as much as digits as its factorization.

21372185119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 40.

The spelling of 21372185119 in words is "twenty-one billion, three hundred seventy-two million, one hundred eighty-five thousand, one hundred nineteen".