100021101212 has 6 divisors (see below), whose sum is σ = 175036927128. Its totient is φ = 50010550604.

The previous prime is 100021101211. The next prime is 100021101223. The reversal of 100021101212 is 212101120001.

It is a super-2 number, since 2×100021101212² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100021101193 and 100021101202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021101211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12502637648 + ... + 12502637655.

It is an arithmetic number, because the mean of its divisors is an integer number (29172821188).

Almost surely, 2^100021101212 is an apocalyptic number.

It is an amenable number.

100021101212 is a deficient number, since it is larger than the sum of its proper divisors (75015825916).

100021101212 is a wasteful number, since it uses less digits than its factorization.

100021101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25005275307 (or 25005275305 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100021101212 its reverse (212101120001), we get a palindrome (312122221213).

The spelling of 100021101212 in words is "one hundred billion, twenty-one million, one hundred one thousand, two hundred twelve".