21102023210999 has 2 divisors, whose sum is σ = 21102023211000. Its totient is φ = 21102023210998.

The previous prime is 21102023210987. The next prime is 21102023211037. The reversal of 21102023210999 is 99901232020112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21102023210999 - 2³² = 21097728243703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21102023210599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551011605499 + 10551011605500.

It is an arithmetic number, because the mean of its divisors is an integer number (10551011605500).

Almost surely, 2^{21102023210999} is an apocalyptic number.

21102023210999 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102023210999 is an equidigital number, since it uses as much as digits as its factorization.

21102023210999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 21102023210999 in words is "twenty-one trillion, one hundred two billion, twenty-three million, two hundred ten thousand, nine hundred ninety-nine".