100030033021 has 4 divisors (see below), whose sum is σ = 100030704732. Its totient is φ = 100029361312.

The previous prime is 100030032961. The next prime is 100030033057. The reversal of 100030033021 is 120330030001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 72894060121 + 27135972900 = 269989^2 + 164730^2 .

It is a cyclic number.

It is not a de Polignac number, because 100030033021 - 2²¹ = 100027935869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100030032992 and 100030033010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100030033721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1570 + ... + 447283.

It is an arithmetic number, because the mean of its divisors is an integer number (25007676183).

Almost surely, 2^100030033021 is an apocalyptic number.

It is an amenable number.

100030033021 is a deficient number, since it is larger than the sum of its proper divisors (671711).

100030033021 is an equidigital number, since it uses as much as digits as its factorization.

100030033021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671710.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 100030033021 its reverse (120330030001), we get a palindrome (220360063022).

The spelling of 100030033021 in words is "one hundred billion, thirty million, thirty-three thousand, twenty-one".