21320122 has 8 divisors (see below), whose sum is σ = 32522400. Its totient is φ = 10479324.

The previous prime is 21320107. The next prime is 21320183. The reversal of 21320122 is 22102312.

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, 90222 + ... + 90457.

It is an arithmetic number, because the mean of its divisors is an integer number (4065300).

Almost surely, 2^21320122 is an apocalyptic number.

21320122 is a deficient number, since it is larger than the sum of its proper divisors (11202278).

21320122 is a wasteful number, since it uses less digits than its factorization.

21320122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180740.

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

The square root of 21320122 is about 4617.3717632437. The cubic root of 21320122 is about 277.2872464997.

Adding to 21320122 its reverse (22102312), we get a palindrome (43422434).

The spelling of 21320122 in words is "twenty-one million, three hundred twenty thousand, one hundred twenty-two".