1223201356 has 12 divisors (see below), whose sum is σ = 2305264192. Its totient is φ = 564554448.

The previous prime is 1223201351. The next prime is 1223201377. The reversal of 1223201356 is 6531023221.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1223201356.

It is not an unprimeable number, because it can be changed into a prime (1223201351) 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, 11761500 + ... + 11761603.

Almost surely, 2^1223201356 is an apocalyptic number.

It is an amenable number.

1223201356 is a deficient number, since it is larger than the sum of its proper divisors (1082062836).

1223201356 is a wasteful number, since it uses less digits than its factorization.

1223201356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23523120 (or 23523118 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1223201356 is about 34974.2956469462. The cubic root of 1223201356 is about 1069.4635433552.

Adding to 1223201356 its reverse (6531023221), we get a palindrome (7754224577).

The spelling of 1223201356 in words is "one billion, two hundred twenty-three million, two hundred one thousand, three hundred fifty-six".