1222047147 has 4 divisors (see below), whose sum is σ = 1629396200. Its totient is φ = 814698096.

The previous prime is 1222047133. The next prime is 1222047161. The reversal of 1222047147 is 7417402221.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1222047133) and next prime (1222047161).

It is not a de Polignac number, because 1222047147 - 2¹² = 1222043051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222047347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203674522 + ... + 203674527.

It is an arithmetic number, because the mean of its divisors is an integer number (407349050).

Almost surely, 2^1222047147 is an apocalyptic number.

1222047147 is a deficient number, since it is larger than the sum of its proper divisors (407349053).

1222047147 is an equidigital number, since it uses as much as digits as its factorization.

1222047147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407349052.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 1222047147 is about 34957.7909342109. The cubic root of 1222047147 is about 1069.1270566712.

Adding to 1222047147 its reverse (7417402221), we get a palindrome (8639449368).

The spelling of 1222047147 in words is "one billion, two hundred twenty-two million, forty-seven thousand, one hundred forty-seven".