121215234 has 16 divisors (see below), whose sum is σ = 277063488. Its totient is φ = 34632912.

The previous prime is 121215173. The next prime is 121215317. The reversal of 121215234 is 432512121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 121215234.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1442997 + ... + 1443080.

It is an arithmetic number, because the mean of its divisors is an integer number (17316468).

Almost surely, 2^121215234 is an apocalyptic number.

121215234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121215234 is an abundant number, since it is smaller than the sum of its proper divisors (155848254).

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

121215234 is a wasteful number, since it uses less digits than its factorization.

121215234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886089.

The product of its digits is 480, while the sum is 21.

The square root of 121215234 is about 11009.7790168559. The cubic root of 121215234 is about 494.9018395297.

Adding to 121215234 its reverse (432512121), we get a palindrome (553727355).

The spelling of 121215234 in words is "one hundred twenty-one million, two hundred fifteen thousand, two hundred thirty-four".