21102023211037 has 2 divisors, whose sum is σ = 21102023211038. Its totient is φ = 21102023211036.

The previous prime is 21102023210999. The next prime is 21102023211109. The reversal of 21102023211037 is 73011232020112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20876729639236 + 225293571801 = 4569106^2 + 474651^2 .

It is a cyclic number.

It is not a de Polignac number, because 21102023211037 - 2¹¹ = 21102023208989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21102023211337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551011605518 + 10551011605519.

It is an arithmetic number, because the mean of its divisors is an integer number (10551011605519).

Almost surely, 2^{21102023211037} is an apocalyptic number.

It is an amenable number.

21102023211037 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102023211037 is an equidigital number, since it uses as much as digits as its factorization.

21102023211037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 21102023211037 its reverse (73011232020112), we get a palindrome (94113255231149).

The spelling of 21102023211037 in words is "twenty-one trillion, one hundred two billion, twenty-three million, two hundred eleven thousand, thirty-seven".