21023022030123 has 8 divisors (see below), whose sum is σ = 28035137627136. Its totient is φ = 14013127226600.

The previous prime is 21023022030119. The next prime is 21023022030133. The reversal of 21023022030123 is 32103022032012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21023022030123 - 2² = 21023022030119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21023022030123.

It is not an unprimeable number, because it can be changed into a prime (21023022030133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555176283 + ... + 555214148.

It is an arithmetic number, because the mean of its divisors is an integer number (3504392203392).

Almost surely, 2^{21023022030123} is an apocalyptic number.

21023022030123 is a deficient number, since it is larger than the sum of its proper divisors (7012115597013).

21023022030123 is a wasteful number, since it uses less digits than its factorization.

21023022030123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110396745.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21023022030123 its reverse (32103022032012), we get a palindrome (53126044062135).

The spelling of 21023022030123 in words is "twenty-one trillion, twenty-three billion, twenty-two million, thirty thousand, one hundred twenty-three".