21442542523099 has 2 divisors, whose sum is σ = 21442542523100. Its totient is φ = 21442542523098.

The previous prime is 21442542523093. The next prime is 21442542523147. The reversal of 21442542523099 is 99032524524412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21442542523099 - 2³ = 21442542523091 is a prime.

It is not a weakly prime, because it can be changed into another prime (21442542523091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10721271261549 + 10721271261550.

It is an arithmetic number, because the mean of its divisors is an integer number (10721271261550).

Almost surely, 2^{21442542523099} is an apocalyptic number.

21442542523099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442542523099 is an equidigital number, since it uses as much as digits as its factorization.

21442542523099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 21442542523099 in words is "twenty-one trillion, four hundred forty-two billion, five hundred forty-two million, five hundred twenty-three thousand, ninety-nine".