121220100112 has 40 divisors (see below), whose sum is σ = 238971847680. Its totient is φ = 59551040640.

The previous prime is 121220100109. The next prime is 121220100163. The reversal of 121220100112 is 211001022121.

It is a junction number, because it is equal to n+sod(n) for n = 121220100092 and 121220100101.

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, 1791537 + ... + 1857967.

It is an arithmetic number, because the mean of its divisors is an integer number (5974296192).

Almost surely, 2^121220100112 is an apocalyptic number.

It is an amenable number.

121220100112 is a deficient number, since it is larger than the sum of its proper divisors (117751747568).

121220100112 is a wasteful number, since it uses less digits than its factorization.

121220100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68431 (or 68425 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121220100112 its reverse (211001022121), we get a palindrome (332221122233).

The spelling of 121220100112 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred thousand, one hundred twelve".