121111412 has 12 divisors (see below), whose sum is σ = 212029860. Its totient is φ = 60531456.

The previous prime is 121111409. The next prime is 121111421. The reversal of 121111412 is 214111121.

It can be written as a sum of positive squares in 2 ways, for example, as 78783376 + 42328036 = 8876^2 + 6506^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9764 + ... + 18372.

It is an arithmetic number, because the mean of its divisors is an integer number (17669155).

Almost surely, 2^121111412 is an apocalyptic number.

It is an amenable number.

121111412 is a deficient number, since it is larger than the sum of its proper divisors (90918448).

121111412 is a wasteful number, since it uses less digits than its factorization.

121111412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12130 (or 12128 counting only the distinct ones).

The product of its digits is 16, while the sum is 14.

The square root of 121111412 is about 11005.0630166301. The cubic root of 121111412 is about 494.7605031269.

Adding to 121111412 its reverse (214111121), we get a palindrome (335222533).

The spelling of 121111412 in words is "one hundred twenty-one million, one hundred eleven thousand, four hundred twelve".