1213202201 has 2 divisors, whose sum is σ = 1213202202. Its totient is φ = 1213202200.

The previous prime is 1213202197. The next prime is 1213202219. The reversal of 1213202201 is 1022023121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1144062976 + 69139225 = 33824^2 + 8315^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213202201 - 2² = 1213202197 is a prime.

It is a super-2 number, since 2×1213202201² = 2943719161022488802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1213202251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606601100 + 606601101.

It is an arithmetic number, because the mean of its divisors is an integer number (606601101).

Almost surely, 2^1213202201 is an apocalyptic number.

It is an amenable number.

1213202201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213202201 is an equidigital number, since it uses as much as digits as its factorization.

1213202201 is an evil number, because the sum of its binary digits is even.

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

The square root of 1213202201 is about 34831.0522522648. The cubic root of 1213202201 is about 1066.5414287316.

Adding to 1213202201 its reverse (1022023121), we get a palindrome (2235225322).

The spelling of 1213202201 in words is "one billion, two hundred thirteen million, two hundred two thousand, two hundred one".