21404241140312 has 32 divisors (see below), whose sum is σ = 40932306018480. Its totient is φ = 10490758364160.

The previous prime is 21404241140311. The next prime is 21404241140327. The reversal of 21404241140312 is 21304114240412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21404241140311) 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, 112331489 + ... + 112521872.

Almost surely, 2^{21404241140312} is an apocalyptic number.

It is an amenable number.

21404241140312 is a deficient number, since it is larger than the sum of its proper divisors (19528064878168).

21404241140312 is a wasteful number, since it uses less digits than its factorization.

21404241140312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224853603 (or 224853599 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 21404241140312 its reverse (21304114240412), we get a palindrome (42708355380724).

The spelling of 21404241140312 in words is "twenty-one trillion, four hundred four billion, two hundred forty-one million, one hundred forty thousand, three hundred twelve".