21112703130 has 32 divisors (see below), whose sum is σ = 50882515200. Its totient is φ = 5606495552.

The previous prime is 21112703123. The next prime is 21112703137. The reversal of 21112703130 is 3130721112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21112703123) and next prime (21112703137).

It is a junction number, because it is equal to n+sod(n) for n = 21112703097 and 21112703106.

It is not an unprimeable number, because it can be changed into a prime (21112703137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1465125 + ... + 1479464.

It is an arithmetic number, because the mean of its divisors is an integer number (1590078600).

Almost surely, 2^21112703130 is an apocalyptic number.

21112703130 is an abundant number, since it is smaller than the sum of its proper divisors (29769812070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21112703130 is a wasteful number, since it uses less digits than its factorization.

21112703130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944838.

The product of its (nonzero) digits is 252, while the sum is 21.

The spelling of 21112703130 in words is "twenty-one billion, one hundred twelve million, seven hundred three thousand, one hundred thirty".