12270020257 has 8 divisors (see below), whose sum is σ = 13387415040. Its totient is φ = 11152948560.

The previous prime is 12270020251. The next prime is 12270020303. The reversal of 12270020257 is 75202007221.

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

It is a cyclic number.

It is not a de Polignac number, because 12270020257 - 2¹⁵ = 12269987489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12270020251) 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, 2368 + ... + 156670.

It is an arithmetic number, because the mean of its divisors is an integer number (1673426880).

Almost surely, 2^12270020257 is an apocalyptic number.

It is an amenable number.

12270020257 is a deficient number, since it is larger than the sum of its proper divisors (1117394783).

12270020257 is a wasteful number, since it uses less digits than its factorization.

12270020257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161543.

The product of its (nonzero) digits is 3920, while the sum is 28.

Adding to 12270020257 its reverse (75202007221), we get a palindrome (87472027478).

The spelling of 12270020257 in words is "twelve billion, two hundred seventy million, twenty thousand, two hundred fifty-seven".