21122342230 has 16 divisors (see below), whose sum is σ = 41476599504. Its totient is φ = 7680851680.

The previous prime is 21122342209. The next prime is 21122342243. The reversal of 21122342230 is 3224322112.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 96010537 + ... + 96010756.

It is an arithmetic number, because the mean of its divisors is an integer number (2592287469).

Almost surely, 2^21122342230 is an apocalyptic number.

21122342230 is a deficient number, since it is larger than the sum of its proper divisors (20354257274).

21122342230 is a wasteful number, since it uses less digits than its factorization.

21122342230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192021311.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21122342230 its reverse (3224322112), we get a palindrome (24346664342).

The spelling of 21122342230 in words is "twenty-one billion, one hundred twenty-two million, three hundred forty-two thousand, two hundred thirty".