12121054 has 12 divisors (see below), whose sum is σ = 19985112. Its totient is φ = 5509460.

The previous prime is 12121009. The next prime is 12121061. The reversal of 12121054 is 45012121.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24802 + ... + 25285.

It is an arithmetic number, because the mean of its divisors is an integer number (1665426).

Almost surely, 2^12121054 is an apocalyptic number.

12121054 is a deficient number, since it is larger than the sum of its proper divisors (7864058).

12121054 is a wasteful number, since it uses less digits than its factorization.

12121054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50111 (or 50100 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 12121054 is about 3481.5304106097. The cubic root of 12121054 is about 229.7101199960.

Adding to 12121054 its reverse (45012121), we get a palindrome (57133175).

The spelling of 12121054 in words is "twelve million, one hundred twenty-one thousand, fifty-four".