1202210201221 has 4 divisors (see below), whose sum is σ = 1215718181100. Its totient is φ = 1188702221344.

The previous prime is 1202210201131. The next prime is 1202210201263. The reversal of 1202210201221 is 1221020122021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74761230625 + 1127448970596 = 273425^2 + 1061814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202210201221 - 2²⁹ = 1201673330309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202210201195 and 1202210201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202210211221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6753989806 + ... + 6753989983.

It is an arithmetic number, because the mean of its divisors is an integer number (303929545275).

Almost surely, 2^{1202210201221} is an apocalyptic number.

It is an amenable number.

1202210201221 is a deficient number, since it is larger than the sum of its proper divisors (13507979879).

1202210201221 is an equidigital number, since it uses as much as digits as its factorization.

1202210201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13507979878.

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

Adding to 1202210201221 its reverse (1221020122021), we get a palindrome (2423230323242).

The spelling of 1202210201221 in words is "one trillion, two hundred two billion, two hundred ten million, two hundred one thousand, two hundred twenty-one".