21423311332412 has 36 divisors (see below), whose sum is σ = 41226958462368. Its totient is φ = 9733599163200.

The previous prime is 21423311332387. The next prime is 21423311332439.

21423311332412 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8598548 + ... + 10806555.

Almost surely, 2^{21423311332412} is an apocalyptic number.

21423311332412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21423311332412 is a deficient number, since it is larger than the sum of its proper divisors (19803647129956).

21423311332412 is a wasteful number, since it uses less digits than its factorization.

21423311332412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19407410 (or 19407397 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

It can be divided in two parts, 2142331 and 1332412, that added together give a palindrome (3474743).

The spelling of 21423311332412 in words is "twenty-one trillion, four hundred twenty-three billion, three hundred eleven million, three hundred thirty-two thousand, four hundred twelve".