21120202232003 has 64 divisors (see below), whose sum is σ = 25939223654400. Its totient is φ = 17155463238144.

The previous prime is 21120202231991. The next prime is 21120202232317. The reversal of 21120202232003 is 30023220202112.

It is a happy number.

It is not a de Polignac number, because 21120202232003 - 2⁶ = 21120202231939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120222232003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3443695325 + ... + 3443701457.

It is an arithmetic number, because the mean of its divisors is an integer number (405300369600).

Almost surely, 2^{21120202232003} is an apocalyptic number.

21120202232003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21120202232003 is a deficient number, since it is larger than the sum of its proper divisors (4819021422397).

21120202232003 is a wasteful number, since it uses less digits than its factorization.

21120202232003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10153 (or 10139 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21120202232003 its reverse (30023220202112), we get a palindrome (51143422434115).

The spelling of 21120202232003 in words is "twenty-one trillion, one hundred twenty billion, two hundred two million, two hundred thirty-two thousand, three".