21311230123130 has 32 divisors (see below), whose sum is σ = 39598767157248. Its totient is φ = 8249273712000.

The previous prime is 21311230123093. The next prime is 21311230123193. The reversal of 21311230123130 is 3132103211312.

It is a super-2 number, since 2×21311230123130² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21311230123096 and 21311230123105.

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, 10138199 + ... + 12058421.

It is an arithmetic number, because the mean of its divisors is an integer number (1237461473664).

Almost surely, 2^{21311230123130} is an apocalyptic number.

21311230123130 is a deficient number, since it is larger than the sum of its proper divisors (18287537034118).

21311230123130 is a wasteful number, since it uses less digits than its factorization.

21311230123130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956062.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21311230123130 its reverse (3132103211312), we get a palindrome (24443333334442).

The spelling of 21311230123130 in words is "twenty-one trillion, three hundred eleven billion, two hundred thirty million, one hundred twenty-three thousand, one hundred thirty".