20103211233 has 30 divisors (see below), whose sum is σ = 34933705026. Its totient is φ = 11487547008.

The previous prime is 20103211223. The next prime is 20103211259. The reversal of 20103211233 is 33211230102.

It can be written as a sum of positive squares in only one way, i.e., 20075205969 + 28005264 = 141687^2 + 5292^2 .

It is not a de Polignac number, because 20103211233 - 2⁴ = 20103211217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20103211213) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2528560 + ... + 2536497.

Almost surely, 2^20103211233 is an apocalyptic number.

It is an amenable number.

20103211233 is a deficient number, since it is larger than the sum of its proper divisors (14830493793).

20103211233 is an equidigital number, since it uses as much as digits as its factorization.

20103211233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5065083 (or 5065067 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20103211233 its reverse (33211230102), we get a palindrome (53314441335).

The spelling of 20103211233 in words is "twenty billion, one hundred three million, two hundred eleven thousand, two hundred thirty-three".