21430131122 has 16 divisors (see below), whose sum is σ = 33841616640. Its totient is φ = 10149744528.

The previous prime is 21430131109. The next prime is 21430131127. The reversal of 21430131122 is 22113103412.

It is a super-2 number, since 2×21430131122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21430131094 and 21430131103.

It is not an unprimeable number, because it can be changed into a prime (21430131127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282143 + ... + 349949.

It is an arithmetic number, because the mean of its divisors is an integer number (2115101040).

Almost surely, 2^21430131122 is an apocalyptic number.

21430131122 is a deficient number, since it is larger than the sum of its proper divisors (12411485518).

21430131122 is a wasteful number, since it uses less digits than its factorization.

21430131122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76145.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21430131122 its reverse (22113103412), we get a palindrome (43543234534).

The spelling of 21430131122 in words is "twenty-one billion, four hundred thirty million, one hundred thirty-one thousand, one hundred twenty-two".