21301442122 has 16 divisors (see below), whose sum is σ = 32300654112. Its totient is φ = 10535177520.

The previous prime is 21301442117. The next prime is 21301442143. The reversal of 21301442122 is 22124410312.

It is a junction number, because it is equal to n+sod(n) for n = 21301442093 and 21301442102.

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, 86053 + ... + 223624.

It is an arithmetic number, because the mean of its divisors is an integer number (2018790882).

Almost surely, 2^21301442122 is an apocalyptic number.

21301442122 is a deficient number, since it is larger than the sum of its proper divisors (10999211990).

21301442122 is a wasteful number, since it uses less digits than its factorization.

21301442122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310053.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21301442122 its reverse (22124410312), we get a palindrome (43425852434).

The spelling of 21301442122 in words is "twenty-one billion, three hundred one million, four hundred forty-two thousand, one hundred twenty-two".