20131222030 has 32 divisors (see below), whose sum is σ = 37856924640. Its totient is φ = 7697827200.

The previous prime is 20131222021. The next prime is 20131222073. The reversal of 20131222030 is 3022213102.

It is a super-2 number, since 2×20131222030² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20131221995 and 20131222013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314364 + ... + 372943.

It is an arithmetic number, because the mean of its divisors is an integer number (1183028895).

Almost surely, 2^20131222030 is an apocalyptic number.

20131222030 is a deficient number, since it is larger than the sum of its proper divisors (17725702610).

20131222030 is a wasteful number, since it uses less digits than its factorization.

20131222030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687444.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20131222030 its reverse (3022213102), we get a palindrome (23153435132).

The spelling of 20131222030 in words is "twenty billion, one hundred thirty-one million, two hundred twenty-two thousand, thirty".