221010100121112 has 32 divisors (see below), whose sum is σ = 552528208839600. Its totient is φ = 73669638902144.

The previous prime is 221010100121093. The next prime is 221010100121117. The reversal of 221010100121112 is 211121001010122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221010100121091 and 221010100121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221010100121117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20061483 + ... + 29059994.

Almost surely, 2^{221010100121112} is an apocalyptic number.

It is an amenable number.

221010100121112 is an abundant number, since it is smaller than the sum of its proper divisors (331518108718488).

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

221010100121112 is a wasteful number, since it uses less digits than its factorization.

221010100121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49308955 (or 49308951 counting only the distinct ones).

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

Adding to 221010100121112 its reverse (211121001010122), we get a palindrome (432131101131234).

The spelling of 221010100121112 in words is "two hundred twenty-one trillion, ten billion, one hundred million, one hundred twenty-one thousand, one hundred twelve".