121051216 has 80 divisors (see below), whose sum is σ = 277982208. Its totient is φ = 50342400.

The previous prime is 121051213. The next prime is 121051241. The reversal of 121051216 is 612150121.

It is a super-3 number, since 3×121051216³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121051193 and 121051202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121051211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436870 + ... + 437146.

Almost surely, 2^121051216 is an apocalyptic number.

121051216 is a gapful number since it is divisible by the number (16) 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 121051216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138991104).

121051216 is an abundant number, since it is smaller than the sum of its proper divisors (156930992).

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

121051216 is a wasteful number, since it uses less digits than its factorization.

121051216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 121051216 is about 11002.3277537074. The cubic root of 121051216 is about 494.6785192786.

The spelling of 121051216 in words is "one hundred twenty-one million, fifty-one thousand, two hundred sixteen".