21401023130 has 16 divisors (see below), whose sum is σ = 38776955904. Its totient is φ = 8503717200.

The previous prime is 21401023123. The next prime is 21401023139. The reversal of 21401023130 is 3132010412.

It is a junction number, because it is equal to n+sod(n) for n = 21401023099 and 21401023108.

It is not an unprimeable number, because it can be changed into a prime (21401023139) 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, 7084922 + ... + 7087941.

It is an arithmetic number, because the mean of its divisors is an integer number (2423559744).

Almost surely, 2^21401023130 is an apocalyptic number.

21401023130 is a deficient number, since it is larger than the sum of its proper divisors (17375932774).

21401023130 is a wasteful number, since it uses less digits than its factorization.

21401023130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14173021.

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

Adding to 21401023130 its reverse (3132010412), we get a palindrome (24533033542).

The spelling of 21401023130 in words is "twenty-one billion, four hundred one million, twenty-three thousand, one hundred thirty".