21401320130 has 16 divisors (see below), whose sum is σ = 40549870080. Its totient is φ = 8109973872.

The previous prime is 21401320079. The next prime is 21401320141. The reversal of 21401320130 is 3102310412.

It is a junction number, because it is equal to n+sod(n) for n = 21401320099 and 21401320108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56319074 + ... + 56319453.

It is an arithmetic number, because the mean of its divisors is an integer number (2534366880).

Almost surely, 2^21401320130 is an apocalyptic number.

21401320130 is a deficient number, since it is larger than the sum of its proper divisors (19148549950).

21401320130 is a wasteful number, since it uses less digits than its factorization.

21401320130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112638553.

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

Adding to 21401320130 its reverse (3102310412), we get a palindrome (24503630542).

The spelling of 21401320130 in words is "twenty-one billion, four hundred one million, three hundred twenty thousand, one hundred thirty".