21334210242031 has 16 divisors (see below), whose sum is σ = 22412953892160. Its totient is φ = 20280650664960.

The previous prime is 21334210241983. The next prime is 21334210242047. The reversal of 21334210242031 is 13024201243312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21334210242031 is a prime.

It is a super-2 number, since 2×21334210242031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334210242061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20125890 + ... + 21159391.

It is an arithmetic number, because the mean of its divisors is an integer number (1400809618260).

Almost surely, 2^{21334210242031} is an apocalyptic number.

21334210242031 is a deficient number, since it is larger than the sum of its proper divisors (1078743650129).

21334210242031 is a wasteful number, since it uses less digits than its factorization.

21334210242031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41285586.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21334210242031 its reverse (13024201243312), we get a palindrome (34358411485343).

The spelling of 21334210242031 in words is "twenty-one trillion, three hundred thirty-four billion, two hundred ten million, two hundred forty-two thousand, thirty-one".