121361219 has 16 divisors (see below), whose sum is σ = 140714496. Its totient is φ = 102523200.

The previous prime is 121361213. The next prime is 121361243. The reversal of 121361219 is 912163121.

It is a cyclic number.

It is not a de Polignac number, because 121361219 - 2⁸ = 121360963 is a prime.

It is a super-2 number, since 2×121361219² = 29457090954331922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121361213) 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, 232679 + ... + 233199.

It is an arithmetic number, because the mean of its divisors is an integer number (8794656).

Almost surely, 2^121361219 is an apocalyptic number.

121361219 is a deficient number, since it is larger than the sum of its proper divisors (19353277).

121361219 is a wasteful number, since it uses less digits than its factorization.

121361219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946.

The product of its digits is 648, while the sum is 26.

The square root of 121361219 is about 11016.4068098450. The cubic root of 121361219 is about 495.1004373959.

The spelling of 121361219 in words is "one hundred twenty-one million, three hundred sixty-one thousand, two hundred nineteen".