1202012221 has 2 divisors, whose sum is σ = 1202012222. Its totient is φ = 1202012220.

The previous prime is 1202012191. The next prime is 1202012297. The reversal of 1202012221 is 1222102021.

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., 1173816121 + 28196100 = 34261^2 + 5310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202012221 - 2¹⁵ = 1201979453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202010221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601006110 + 601006111.

It is an arithmetic number, because the mean of its divisors is an integer number (601006111).

Almost surely, 2^1202012221 is an apocalyptic number.

It is an amenable number.

1202012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202012221 is an equidigital number, since it uses as much as digits as its factorization.

1202012221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1202012221 is about 34670.0478944001. The cubic root of 1202012221 is about 1063.2522107924.

Adding to 1202012221 its reverse (1222102021), we get a palindrome (2424114242).

The spelling of 1202012221 in words is "one billion, two hundred two million, twelve thousand, two hundred twenty-one".