100011221212012 has 24 divisors (see below), whose sum is σ = 190957989776400. Its totient is φ = 45453103968960.

The previous prime is 100011221212009. The next prime is 100011221212013. The reversal of 100011221212012 is 210212122110001.

It is not an unprimeable number, because it can be changed into a prime (100011221212013) 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, 163241683 + ... + 163853194.

It is an arithmetic number, because the mean of its divisors is an integer number (7956582907350).

Almost surely, 2^{100011221212012} is an apocalyptic number.

It is an amenable number.

100011221212012 is a deficient number, since it is larger than the sum of its proper divisors (90946768564388).

100011221212012 is a wasteful number, since it uses less digits than its factorization.

100011221212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327101841 (or 327101839 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100011221212012 its reverse (210212122110001), we get a palindrome (310223343322013).

The spelling of 100011221212012 in words is "one hundred trillion, eleven billion, two hundred twenty-one million, two hundred twelve thousand, twelve".