21223102123007 has 2 divisors, whose sum is σ = 21223102123008. Its totient is φ = 21223102123006.

The previous prime is 21223102122961. The next prime is 21223102123037. The reversal of 21223102123007 is 70032120132212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21223102123007 - 2²⁰ = 21223101074431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21223102123037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611551061503 + 10611551061504.

It is an arithmetic number, because the mean of its divisors is an integer number (10611551061504).

Almost surely, 2^{21223102123007} is an apocalyptic number.

21223102123007 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223102123007 is an equidigital number, since it uses as much as digits as its factorization.

21223102123007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 21223102123007 its reverse (70032120132212), we get a palindrome (91255222255219).

The spelling of 21223102123007 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred two million, one hundred twenty-three thousand, seven".