12220251 has 8 divisors (see below), whose sum is σ = 16318224. Its totient is φ = 8134560.

The previous prime is 12220237. The next prime is 12220253. The reversal of 12220251 is 15202221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12220251 - 2¹³ = 12212059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12220251.

It is not an unprimeable number, because it can be changed into a prime (12220253) 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, 420 + ... + 4961.

It is an arithmetic number, because the mean of its divisors is an integer number (2039778).

Almost surely, 2^12220251 is an apocalyptic number.

12220251 is a deficient number, since it is larger than the sum of its proper divisors (4097973).

12220251 is an equidigital number, since it uses as much as digits as its factorization.

12220251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6141.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12220251 is about 3495.7475595357. The cubic root of 12220251 is about 230.3350567165.

Adding to 12220251 its reverse (15202221), we get a palindrome (27422472).

The spelling of 12220251 in words is "twelve million, two hundred twenty thousand, two hundred fifty-one".