100011212221112 has 32 divisors (see below), whose sum is σ = 187613647632000. Its totient is φ = 49980907476864.

The previous prime is 100011212221043. The next prime is 100011212221187. The reversal of 100011212221112 is 211122212110001.

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, 979711418 + ... + 979813494.

It is an arithmetic number, because the mean of its divisors is an integer number (5862926488500).

Almost surely, 2^{100011212221112} is an apocalyptic number.

It is an amenable number.

100011212221112 is a deficient number, since it is larger than the sum of its proper divisors (87602435410888).

100011212221112 is a wasteful number, since it uses less digits than its factorization.

100011212221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161375 (or 161371 counting only the distinct ones).

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

Adding to 100011212221112 its reverse (211122212110001), we get a palindrome (311133424331113).

The spelling of 100011212221112 in words is "one hundred trillion, eleven billion, two hundred twelve million, two hundred twenty-one thousand, one hundred twelve".