21302232122 has 16 divisors (see below), whose sum is σ = 32012874432. Its totient is φ = 10631293920.

The previous prime is 21302232103. The next prime is 21302232131. The reversal of 21302232122 is 22123220312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21302232094 and 21302232103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2827853 + ... + 2835375.

It is an arithmetic number, because the mean of its divisors is an integer number (2000804652).

Almost surely, 2^21302232122 is an apocalyptic number.

21302232122 is a deficient number, since it is larger than the sum of its proper divisors (10710642310).

21302232122 is a wasteful number, since it uses less digits than its factorization.

21302232122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21302232122 its reverse (22123220312), we get a palindrome (43425452434).

The spelling of 21302232122 in words is "twenty-one billion, three hundred two million, two hundred thirty-two thousand, one hundred twenty-two".