12100477 has 2 divisors, whose sum is σ = 12100478. Its totient is φ = 12100476.

The previous prime is 12100471. The next prime is 12100499. The reversal of 12100477 is 77400121.

It is an a-pointer prime, because the next prime (12100499) can be obtained adding 12100477 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8964036 + 3136441 = 2994^2 + 1771^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100477 - 2⁷ = 12100349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050238 + 6050239.

It is an arithmetic number, because the mean of its divisors is an integer number (6050239).

Almost surely, 2^12100477 is an apocalyptic number.

It is an amenable number.

12100477 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100477 is an equidigital number, since it uses as much as digits as its factorization.

12100477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 12100477 is about 3478.5739894388. The cubic root of 12100477 is about 229.5800591831.

Adding to 12100477 its reverse (77400121), we get a palindrome (89500598).

It can be divided in two parts, 12 and 100477, that added together give a square (100489 = 317²).

The spelling of 12100477 in words is "twelve million, one hundred thousand, four hundred seventy-seven".