121123412 has 6 divisors (see below), whose sum is σ = 211965978. Its totient is φ = 60561704.

The previous prime is 121123399. The next prime is 121123421. The reversal of 121123412 is 214321121.

It can be written as a sum of positive squares in only one way, i.e., 115906756 + 5216656 = 10766^2 + 2284^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15140423 + ... + 15140430.

It is an arithmetic number, because the mean of its divisors is an integer number (35327663).

Almost surely, 2^121123412 is an apocalyptic number.

It is an amenable number.

121123412 is a deficient number, since it is larger than the sum of its proper divisors (90842566).

121123412 is a wasteful number, since it uses less digits than its factorization.

121123412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30280857 (or 30280855 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 121123412 is about 11005.6082067281. The cubic root of 121123412 is about 494.7768432605.

Adding to 121123412 its reverse (214321121), we get a palindrome (335444533).

The spelling of 121123412 in words is "one hundred twenty-one million, one hundred twenty-three thousand, four hundred twelve".