100033001021 has 2 divisors, whose sum is σ = 100033001022. Its totient is φ = 100033001020.

The previous prime is 100033001011. The next prime is 100033001113. The reversal of 100033001021 is 120100330001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58636622500 + 41396378521 = 242150^2 + 203461^2 .

It is a cyclic number.

It is not a de Polignac number, because 100033001021 - 2¹⁸ = 100032738877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100033000993 and 100033001011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100033001011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50016500510 + 50016500511.

It is an arithmetic number, because the mean of its divisors is an integer number (50016500511).

Almost surely, 2^100033001021 is an apocalyptic number.

It is an amenable number.

100033001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

100033001021 is an equidigital number, since it uses as much as digits as its factorization.

100033001021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 100033001021 its reverse (120100330001), we get a palindrome (220133331022).

The spelling of 100033001021 in words is "one hundred billion, thirty-three million, one thousand, twenty-one".