21130401412 has 24 divisors (see below), whose sum is σ = 39058756352. Its totient is φ = 9986608800.

The previous prime is 21130401401. The next prime is 21130401419. The reversal of 21130401412 is 21410403112.

It is a self number, because there is not a number n which added to its sum of digits gives 21130401412.

It is not an unprimeable number, because it can be changed into a prime (21130401419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1976139 + ... + 1986802.

Almost surely, 2^21130401412 is an apocalyptic number.

It is an amenable number.

21130401412 is a deficient number, since it is larger than the sum of its proper divisors (17928354940).

21130401412 is a wasteful number, since it uses less digits than its factorization.

21130401412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3963019 (or 3963017 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21130401412 its reverse (21410403112), we get a palindrome (42540804524).

The spelling of 21130401412 in words is "twenty-one billion, one hundred thirty million, four hundred one thousand, four hundred twelve".