100021002212 has 6 divisors (see below), whose sum is σ = 175036753878. Its totient is φ = 50010501104.

The previous prime is 100021002209. The next prime is 100021002223. The reversal of 100021002212 is 212200120001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 79610879716 + 20410122496 = 282154^2 + 142864^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100021002193 and 100021002202.

It is an unprimeable number.

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, 12502625273 + ... + 12502625280.

It is an arithmetic number, because the mean of its divisors is an integer number (29172792313).

Almost surely, 2^100021002212 is an apocalyptic number.

It is an amenable number.

100021002212 is a deficient number, since it is larger than the sum of its proper divisors (75015751666).

100021002212 is a wasteful number, since it uses less digits than its factorization.

100021002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25005250557 (or 25005250555 counting only the distinct ones).

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

Adding to 100021002212 its reverse (212200120001), we get a palindrome (312221122213).

The spelling of 100021002212 in words is "one hundred billion, twenty-one million, two thousand, two hundred twelve".