12020554 has 16 divisors (see below), whose sum is σ = 22192128. Its totient is φ = 4755312.

The previous prime is 12020551. The next prime is 12020557. The reversal of 12020554 is 45502021.

It is an interprime number because it is at equal distance from previous prime (12020551) and next prime (12020557).

It is not an unprimeable number, because it can be changed into a prime (12020551) 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, 32842 + ... + 33205.

It is an arithmetic number, because the mean of its divisors is an integer number (1387008).

Almost surely, 2^12020554 is an apocalyptic number.

12020554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12020554 is a deficient number, since it is larger than the sum of its proper divisors (10171574).

12020554 is a wasteful number, since it uses less digits than its factorization.

12020554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66069.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 12020554 is about 3467.0670602110. The cubic root of 12020554 is about 229.0734875988.

Adding to 12020554 its reverse (45502021), we get a palindrome (57522575).

The spelling of 12020554 in words is "twelve million, twenty thousand, five hundred fifty-four".