100011012121212 has 24 divisors (see below), whose sum is σ = 233359512374016. Its totient is φ = 33336934884528.

The previous prime is 100011012121201. The next prime is 100011012121243. The reversal of 100011012121212 is 212121210110001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100011012121191 and 100011012121200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2440698 + ... + 14351969.

It is an arithmetic number, because the mean of its divisors is an integer number (9723313015584).

Almost surely, 2^{100011012121212} is an apocalyptic number.

100011012121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100011012121212 is an abundant number, since it is smaller than the sum of its proper divisors (133348500252804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100011012121212 is a wasteful number, since it uses less digits than its factorization.

100011012121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17288977 (or 17288975 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100011012121212 its reverse (212121210110001), we get a palindrome (312132222231213).

The spelling of 100011012121212 in words is "one hundred trillion, eleven billion, twelve million, one hundred twenty-one thousand, two hundred twelve".