21223102123037 has 2 divisors, whose sum is σ = 21223102123038. Its totient is φ = 21223102123036.

The previous prime is 21223102123007. The next prime is 21223102123127. The reversal of 21223102123037 is 73032120132212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13256742642361 + 7966359480676 = 3640981^2 + 2822474^2 .

It is a cyclic number.

It is not a de Polignac number, because 21223102123037 - 2¹² = 21223102118941 is a prime.

It is a super-2 number, since 2×21223102123037² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21223102123007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611551061518 + 10611551061519.

It is an arithmetic number, because the mean of its divisors is an integer number (10611551061519).

Almost surely, 2^{21223102123037} is an apocalyptic number.

It is an amenable number.

21223102123037 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223102123037 is an equidigital number, since it uses as much as digits as its factorization.

21223102123037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

Adding to 21223102123037 its reverse (73032120132212), we get a palindrome (94255222255249).

The spelling of 21223102123037 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred two million, one hundred twenty-three thousand, thirty-seven".