100021001204 has 6 divisors (see below), whose sum is σ = 175036752114. Its totient is φ = 50010500600.

The previous prime is 100021001203. The next prime is 100021001239. The reversal of 100021001204 is 402100120001.

It can be written as a sum of positive squares in only one way, i.e., 82169369104 + 17851632100 = 286652^2 + 133610^2 .

It is a super-3 number, since 3×100021001204³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021001203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12502625147 + ... + 12502625154.

It is an arithmetic number, because the mean of its divisors is an integer number (29172792019).

Almost surely, 2^100021001204 is an apocalyptic number.

It is an amenable number.

100021001204 is a deficient number, since it is larger than the sum of its proper divisors (75015750910).

100021001204 is a wasteful number, since it uses less digits than its factorization.

100021001204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25005250305 (or 25005250303 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100021001204 its reverse (402100120001), we get a palindrome (502121121205).

The spelling of 100021001204 in words is "one hundred billion, twenty-one million, one thousand, two hundred four".