21142334003 has 16 divisors (see below), whose sum is σ = 24979120320. Its totient is φ = 17517772800.

The previous prime is 21142333981. The next prime is 21142334011. The reversal of 21142334003 is 30043324112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21142334003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21142334003.

It is not an unprimeable number, because it can be changed into a prime (21142334033) 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, 306638 + ... + 369203.

It is an arithmetic number, because the mean of its divisors is an integer number (1561195020).

Almost surely, 2^21142334003 is an apocalyptic number.

21142334003 is a deficient number, since it is larger than the sum of its proper divisors (3836786317).

21142334003 is a wasteful number, since it uses less digits than its factorization.

21142334003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675998.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21142334003 its reverse (30043324112), we get a palindrome (51185658115).

The spelling of 21142334003 in words is "twenty-one billion, one hundred forty-two million, three hundred thirty-four thousand, three".