121100211112 has 16 divisors (see below), whose sum is σ = 227375235360. Its totient is φ = 60466815024.

The previous prime is 121100211107. The next prime is 121100211131. The reversal of 121100211112 is 211112001121.

It is a happy number.

It is a super-2 number, since 2×121100211112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121100211092 and 121100211101.

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, 10405138 + ... + 10416769.

It is an arithmetic number, because the mean of its divisors is an integer number (14210952210).

Almost surely, 2^121100211112 is an apocalyptic number.

It is an amenable number.

121100211112 is a deficient number, since it is larger than the sum of its proper divisors (106275024248).

121100211112 is a wasteful number, since it uses less digits than its factorization.

121100211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20822640 (or 20822636 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121100211112 its reverse (211112001121), we get a palindrome (332212212233).

The spelling of 121100211112 in words is "one hundred twenty-one billion, one hundred million, two hundred eleven thousand, one hundred twelve".