100011212212220 has 12 divisors (see below), whose sum is σ = 210023545645704. Its totient is φ = 40004484884880.

The previous prime is 100011212212201. The next prime is 100011212212271. The reversal of 100011212212220 is 22212212110001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500280305286 + ... + 2500280305325.

It is an arithmetic number, because the mean of its divisors is an integer number (17501962137142).

Almost surely, 2^{100011212212220} is an apocalyptic number.

100011212212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011212212220 is an abundant number, since it is smaller than the sum of its proper divisors (110012333433484).

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

100011212212220 is a wasteful number, since it uses less digits than its factorization.

100011212212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000560610620 (or 5000560610618 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 100011212212220 its reverse (22212212110001), we get a palindrome (122223424322221).

The spelling of 100011212212220 in words is "one hundred trillion, eleven billion, two hundred twelve million, two hundred twelve thousand, two hundred twenty".