21122013230 has 32 divisors (see below), whose sum is σ = 39099456000. Its totient is φ = 8210819232.

The previous prime is 21122013217. The next prime is 21122013257. The reversal of 21122013230 is 3231022112.

It is a super-2 number, since 2×21122013230² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122013199 and 21122013208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37850 + ... + 208989.

It is an arithmetic number, because the mean of its divisors is an integer number (1221858000).

Almost surely, 2^21122013230 is an apocalyptic number.

21122013230 is a deficient number, since it is larger than the sum of its proper divisors (17977442770).

21122013230 is a wasteful number, since it uses less digits than its factorization.

21122013230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247088.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21122013230 its reverse (3231022112), we get a palindrome (24353035342).

The spelling of 21122013230 in words is "twenty-one billion, one hundred twenty-two million, thirteen thousand, two hundred thirty".