21002130040233 has 16 divisors (see below), whose sum is σ = 28266556225536. Its totient is φ = 13869899608320.

The previous prime is 21002130040211. The next prime is 21002130040237. The reversal of 21002130040233 is 33204003120012.

It is not a de Polignac number, because 21002130040233 - 2⁹ = 21002130039721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21002130040237) 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, 41959248 + ... + 42456833.

It is an arithmetic number, because the mean of its divisors is an integer number (1766659764096).

Almost surely, 2^{21002130040233} is an apocalyptic number.

It is an amenable number.

21002130040233 is a deficient number, since it is larger than the sum of its proper divisors (7264426185303).

21002130040233 is a wasteful number, since it uses less digits than its factorization.

21002130040233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84416864.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21002130040233 its reverse (33204003120012), we get a palindrome (54206133160245).

The spelling of 21002130040233 in words is "twenty-one trillion, two billion, one hundred thirty million, forty thousand, two hundred thirty-three".