1221032201 has 8 divisors (see below), whose sum is σ = 1229437440. Its totient is φ = 1212649648.

The previous prime is 1221032177. The next prime is 1221032221. The reversal of 1221032201 is 1022301221.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221032201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221032221) 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, 110360 + ... + 120918.

It is an arithmetic number, because the mean of its divisors is an integer number (153679680).

Almost surely, 2^1221032201 is an apocalyptic number.

It is an amenable number.

1221032201 is a deficient number, since it is larger than the sum of its proper divisors (8405239).

1221032201 is a wasteful number, since it uses less digits than its factorization.

1221032201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11343.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1221032201 is about 34943.2711834482. The cubic root of 1221032201 is about 1068.8309942334.

Adding to 1221032201 its reverse (1022301221), we get a palindrome (2243333422).

The spelling of 1221032201 in words is "one billion, two hundred twenty-one million, thirty-two thousand, two hundred one".