1212021202201 has 2 divisors, whose sum is σ = 1212021202202. Its totient is φ = 1212021202200.

The previous prime is 1212021202181. The next prime is 1212021202243. The reversal of 1212021202201 is 1022021202121.

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., 1116107731600 + 95913470601 = 1056460^2 + 309699^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212021202201 - 2¹³ = 1212021194009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212021202261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606010601100 + 606010601101.

It is an arithmetic number, because the mean of its divisors is an integer number (606010601101).

Almost surely, 2^{1212021202201} is an apocalyptic number.

It is an amenable number.

1212021202201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212021202201 is an equidigital number, since it uses as much as digits as its factorization.

1212021202201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212021202201 its reverse (1022021202121), we get a palindrome (2234042404322).

The spelling of 1212021202201 in words is "one trillion, two hundred twelve billion, twenty-one million, two hundred two thousand, two hundred one".