121202112 has 112 divisors (see below), whose sum is σ = 344984832. Its totient is φ = 37416960.

The previous prime is 121202101. The next prime is 121202131. The reversal of 121202112 is 211202121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231483 + ... + 232005.

Almost surely, 2^121202112 is an apocalyptic number.

121202112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172492416).

121202112 is an abundant number, since it is smaller than the sum of its proper divisors (223782720).

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

121202112 is a wasteful number, since it uses less digits than its factorization.

121202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 121202112 is about 11009.1830759598. The cubic root of 121202112 is about 494.8839805635.

Adding to 121202112 its reverse (211202121), we get a palindrome (332404233).

Subtracting 121202112 from its reverse (211202121), we obtain a palindrome (90000009).

The spelling of 121202112 in words is "one hundred twenty-one million, two hundred two thousand, one hundred twelve".