21220023119 has 2 divisors, whose sum is σ = 21220023120. Its totient is φ = 21220023118.

The previous prime is 21220023059. The next prime is 21220023151. The reversal of 21220023119 is 91132002212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21220023119 is a prime.

It is a super-2 number, since 2×21220023119² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21220023094 and 21220023103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21220023619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610011559 + 10610011560.

It is an arithmetic number, because the mean of its divisors is an integer number (10610011560).

Almost surely, 2^21220023119 is an apocalyptic number.

21220023119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220023119 is an equidigital number, since it uses as much as digits as its factorization.

21220023119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 21220023119 in words is "twenty-one billion, two hundred twenty million, twenty-three thousand, one hundred nineteen".