100121212110222 has 24 divisors (see below), whose sum is σ = 216929562399576. Its totient is φ = 33373695909456.

The previous prime is 100121212110193. The next prime is 100121212110223. The reversal of 100121212110222 is 222011212121001.

100121212110222 is a `hidden beast` number, since 1 + 0 + 0 + 121 + 212 + 110 + 222 = 666.

It is a super-2 number, since 2×100121212110222² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 100121212110195 and 100121212110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121212110223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13752853 + ... + 19732799.

It is an arithmetic number, because the mean of its divisors is an integer number (9038731766649).

Almost surely, 2^{100121212110222} is an apocalyptic number.

100121212110222 is an abundant number, since it is smaller than the sum of its proper divisors (116808350289354).

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

100121212110222 is a wasteful number, since it uses less digits than its factorization.

100121212110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6910112 (or 6910109 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 100121212110222 its reverse (222011212121001), we get a palindrome (322132424231223).

The spelling of 100121212110222 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, two hundred twenty-two".