100212111212 has 12 divisors (see below), whose sum is σ = 175406282856. Its totient is φ = 50096030400.

The previous prime is 100212111211. The next prime is 100212111239. The reversal of 100212111212 is 212111212001.

It is a super-2 number, since 2×100212111212² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100212111211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2483789 + ... + 2523812.

It is an arithmetic number, because the mean of its divisors is an integer number (14617190238).

Almost surely, 2^100212111212 is an apocalyptic number.

It is an amenable number.

100212111212 is a deficient number, since it is larger than the sum of its proper divisors (75194171644).

100212111212 is a wasteful number, since it uses less digits than its factorization.

100212111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012608 (or 5012606 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100212111212 its reverse (212111212001), we get a palindrome (312323323213).

The spelling of 100212111212 in words is "one hundred billion, two hundred twelve million, one hundred eleven thousand, two hundred twelve".