21023122 has 8 divisors (see below), whose sum is σ = 31559472. Its totient is φ = 10503300.

The previous prime is 21023117. The next prime is 21023137. The reversal of 21023122 is 22132012.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204 + ... + 6487.

It is an arithmetic number, because the mean of its divisors is an integer number (3944934).

Almost surely, 2^21023122 is an apocalyptic number.

21023122 is a deficient number, since it is larger than the sum of its proper divisors (10536350).

21023122 is a wasteful number, since it uses less digits than its factorization.

21023122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8264.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 21023122 is about 4585.0978179315. The cubic root of 21023122 is about 275.9936373945.

Adding to 21023122 its reverse (22132012), we get a palindrome (43155134).

It can be divided in two parts, 210 and 23122, that added together give a palindrome (23332).

The spelling of 21023122 in words is "twenty-one million, twenty-three thousand, one hundred twenty-two".