121012220112 has 40 divisors (see below), whose sum is σ = 357274174656. Its totient is φ = 34574919936.

The previous prime is 121012220071. The next prime is 121012220137. The reversal of 121012220112 is 211022210121.

It is a super-3 number, since 3×121012220112³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121012220091 and 121012220100.

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, 180077373 + ... + 180078044.

Almost surely, 2^121012220112 is an apocalyptic number.

121012220112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121012220112 is an abundant number, since it is smaller than the sum of its proper divisors (236261954544).

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

121012220112 is a wasteful number, since it uses less digits than its factorization.

121012220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360155435 (or 360155429 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121012220112 its reverse (211022210121), we get a palindrome (332034430233).

Subtracting 121012220112 from its reverse (211022210121), we obtain a palindrome (90009990009).

The spelling of 121012220112 in words is "one hundred twenty-one billion, twelve million, two hundred twenty thousand, one hundred twelve".