100120121211212 has 24 divisors (see below), whose sum is σ = 184436148671040. Its totient is φ = 47424202917840.

The previous prime is 100120121211179. The next prime is 100120121211217. The reversal of 100120121211212 is 212112121021001.

It is not an unprimeable number, because it can be changed into a prime (100120121211217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12272438 + ... + 18731069.

It is an arithmetic number, because the mean of its divisors is an integer number (7684839527960).

Almost surely, 2^{100120121211212} is an apocalyptic number.

It is an amenable number.

100120121211212 is a deficient number, since it is larger than the sum of its proper divisors (84316027459828).

100120121211212 is a wasteful number, since it uses less digits than its factorization.

100120121211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31046021 (or 31046019 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 100120121211212 its reverse (212112121021001), we get a palindrome (312232242232213).

The spelling of 100120121211212 in words is "one hundred trillion, one hundred twenty billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twelve".