100021212212 has 6 divisors (see below), whose sum is σ = 175037121378. Its totient is φ = 50010606104.

The previous prime is 100021212167. The next prime is 100021212281. The reversal of 100021212212 is 212212120001.

It can be written as a sum of positive squares in only one way, i.e., 96047927056 + 3973285156 = 309916^2 + 63034^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12502651523 + ... + 12502651530.

It is an arithmetic number, because the mean of its divisors is an integer number (29172853563).

Almost surely, 2^100021212212 is an apocalyptic number.

It is an amenable number.

100021212212 is a deficient number, since it is larger than the sum of its proper divisors (75015909166).

100021212212 is a wasteful number, since it uses less digits than its factorization.

100021212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25005303057 (or 25005303055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100021212212 its reverse (212212120001), we get a palindrome (312233332213).

The spelling of 100021212212 in words is "one hundred billion, twenty-one million, two hundred twelve thousand, two hundred twelve".