12210120016 has 10 divisors (see below), whose sum is σ = 23657107562. Its totient is φ = 6105060000.

The previous prime is 12210120011. The next prime is 12210120017. The reversal of 12210120016 is 61002101221.

It can be written as a sum of positive squares in only one way, i.e., 9316110400 + 2894009616 = 96520^2 + 53796^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 763132501 = 12210120016 / (1 + 2 + 2 + 1 + 0 + 1 + 2 + 0 + 0 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210120011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381566235 + ... + 381566266.

Almost surely, 2^12210120016 is an apocalyptic number.

12210120016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12210120016 is a deficient number, since it is larger than the sum of its proper divisors (11446987546).

12210120016 is an equidigital number, since it uses as much as digits as its factorization.

12210120016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763132509 (or 763132503 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12210120016 its reverse (61002101221), we get a palindrome (73212221237).

The spelling of 12210120016 in words is "twelve billion, two hundred ten million, one hundred twenty thousand, sixteen".