21246121374119 has 2 divisors, whose sum is σ = 21246121374120. Its totient is φ = 21246121374118.

The previous prime is 21246121374103. The next prime is 21246121374161. The reversal of 21246121374119 is 91147312164212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21246121374119 - 2⁴ = 21246121374103 is a prime.

It is a super-2 number, since 2×21246121374119² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21246121374119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21246121374169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10623060687059 + 10623060687060.

It is an arithmetic number, because the mean of its divisors is an integer number (10623060687060).

Almost surely, 2^{21246121374119} is an apocalyptic number.

21246121374119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21246121374119 is an equidigital number, since it uses as much as digits as its factorization.

21246121374119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The spelling of 21246121374119 in words is "twenty-one trillion, two hundred forty-six billion, one hundred twenty-one million, three hundred seventy-four thousand, one hundred nineteen".