1220202446 has 12 divisors (see below), whose sum is σ = 1855735992. Its totient is φ = 601738416.

The previous prime is 1220202433. The next prime is 1220202449. The reversal of 1220202446 is 6442020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220202449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46586 + ... + 67901.

It is an arithmetic number, because the mean of its divisors is an integer number (154644666).

Almost surely, 2^1220202446 is an apocalyptic number.

1220202446 is a deficient number, since it is larger than the sum of its proper divisors (635533546).

1220202446 is an equidigital number, since it uses as much as digits as its factorization.

1220202446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114635 (or 114562 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1220202446 is about 34931.3962789923. The cubic root of 1220202446 is about 1068.5888305875.

Adding to 1220202446 its reverse (6442020221), we get a palindrome (7662222667).

The spelling of 1220202446 in words is "one billion, two hundred twenty million, two hundred two thousand, four hundred forty-six".