1202011221 has 8 divisors (see below), whose sum is σ = 1632921120. Its totient is φ = 786221072.

The previous prime is 1202011219. The next prime is 1202011247. The reversal of 1202011221 is 1221102021.

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

It is a cyclic number.

It is not a de Polignac number, because 1202011221 - 2¹ = 1202011219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202011197 and 1202011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202011271) 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, 3779751 + ... + 3780068.

It is an arithmetic number, because the mean of its divisors is an integer number (204115140).

Almost surely, 2^1202011221 is an apocalyptic number.

It is an amenable number.

1202011221 is a deficient number, since it is larger than the sum of its proper divisors (430909899).

1202011221 is an equidigital number, since it uses as much as digits as its factorization.

1202011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7559875.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1202011221 is about 34670.0334727268. The cubic root of 1202011221 is about 1063.2519159389.

Adding to 1202011221 its reverse (1221102021), we get a palindrome (2423113242).

The spelling of 1202011221 in words is "one billion, two hundred two million, eleven thousand, two hundred twenty-one".