21110401143412 has 48 divisors (see below), whose sum is σ = 42918725664640. Its totient is φ = 8897799715200.

The previous prime is 21110401143137. The next prime is 21110401143431. The reversal of 21110401143412 is 21434110401112.

It is a congruent number.

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, 11911462 + ... + 13568482.

Almost surely, 2^{21110401143412} is an apocalyptic number.

It is an amenable number.

21110401143412 is an abundant number, since it is smaller than the sum of its proper divisors (21808324521228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110401143412 is a wasteful number, since it uses less digits than its factorization.

21110401143412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664552 (or 1664550 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 21110401143412 its reverse (21434110401112), we get a palindrome (42544511544524).

The spelling of 21110401143412 in words is "twenty-one trillion, one hundred ten billion, four hundred one million, one hundred forty-three thousand, four hundred twelve".