1220210201 has 12 divisors (see below), whose sum is σ = 1432456740. Its totient is φ = 1036294560.

The previous prime is 1220210171. The next prime is 1220210209. The reversal of 1220210201 is 1020120221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 600250000 + 619960201 = 24500^2 + 24899^2 .

It is not a de Polignac number, because 1220210201 - 2⁶ = 1220210137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220210209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108890 + ... + 119571.

It is an arithmetic number, because the mean of its divisors is an integer number (119371395).

Almost surely, 2^1220210201 is an apocalyptic number.

It is an amenable number.

1220210201 is a deficient number, since it is larger than the sum of its proper divisors (212246539).

1220210201 is a wasteful number, since it uses less digits than its factorization.

1220210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228584 (or 228577 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1220210201 is about 34931.5072821085. The cubic root of 1220210201 is about 1068.5910943892.

Adding to 1220210201 its reverse (1020120221), we get a palindrome (2240330422).

The spelling of 1220210201 in words is "one billion, two hundred twenty million, two hundred ten thousand, two hundred one".