100033021331 has 12 divisors (see below), whose sum is σ = 104784629880. Its totient is φ = 95488636320.

The previous prime is 100033021313. The next prime is 100033021337. The reversal of 100033021331 is 133120330001.

It is a de Polignac number, because none of the positive numbers 2^k-100033021331 is a prime.

It is a super-2 number, since 2×100033021331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100033021337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67175 + ... + 452303.

It is an arithmetic number, because the mean of its divisors is an integer number (8732052490).

Almost surely, 2^100033021331 is an apocalyptic number.

100033021331 is a deficient number, since it is larger than the sum of its proper divisors (4751608549).

100033021331 is an equidigital number, since it uses as much as digits as its factorization.

100033021331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385666 (or 385643 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 100033021331 its reverse (133120330001), we get a palindrome (233153351332).

The spelling of 100033021331 in words is "one hundred billion, thirty-three million, twenty-one thousand, three hundred thirty-one".