121102219 has 16 divisors (see below), whose sum is σ = 146049280. Its totient is φ = 98094240.

The previous prime is 121102171. The next prime is 121102243. The reversal of 121102219 is 912201121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121102219 - 2¹¹ = 121100171 is a prime.

It is a super-2 number, since 2×121102219² = 29331494893447922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121102196 and 121102205.

It is not an unprimeable number, because it can be changed into a prime (121102519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68689 + ... + 70429.

It is an arithmetic number, because the mean of its divisors is an integer number (9128080).

Almost surely, 2^121102219 is an apocalyptic number.

121102219 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

121102219 is a deficient number, since it is larger than the sum of its proper divisors (24947061).

121102219 is a wasteful number, since it uses less digits than its factorization.

121102219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 121102219 is about 11004.6453373110. The cubic root of 121102219 is about 494.7479844927.

The spelling of 121102219 in words is "one hundred twenty-one million, one hundred two thousand, two hundred nineteen".