121213369 has 8 divisors (see below), whose sum is σ = 131042240. Its totient is φ = 111729456.

The previous prime is 121213333. The next prime is 121213397. The reversal of 121213369 is 963312121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121213369 - 2⁷ = 121213241 is a prime.

It is a super-2 number, since 2×121213369² = 29385361648660322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121213399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85509 + ... + 86914.

It is an arithmetic number, because the mean of its divisors is an integer number (16380280).

Almost surely, 2^121213369 is an apocalyptic number.

121213369 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

121213369 is a deficient number, since it is larger than the sum of its proper divisors (9828871).

121213369 is a wasteful number, since it uses less digits than its factorization.

121213369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172479.

The product of its digits is 1944, while the sum is 28.

The square root of 121213369 is about 11009.6943190990. The cubic root of 121213369 is about 494.8993013540.

The spelling of 121213369 in words is "one hundred twenty-one million, two hundred thirteen thousand, three hundred sixty-nine".