1202210111221 has 8 divisors (see below), whose sum is σ = 1401994299200. Its totient is φ = 1030465809324.

The previous prime is 1202210111171. The next prime is 1202210111227. The reversal of 1202210111221 is 1221110122021.

It is not a de Polignac number, because 1202210111221 - 2¹¹ = 1202210109173 is a prime.

It is a super-2 number, since 2×1202210111221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202210111195 and 1202210111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202210111227) 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, 1752492531 + ... + 1752493216.

It is an arithmetic number, because the mean of its divisors is an integer number (175249287400).

Almost surely, 2^{1202210111221} is an apocalyptic number.

It is an amenable number.

1202210111221 is a deficient number, since it is larger than the sum of its proper divisors (199784187979).

1202210111221 is an frugal number, since it uses more digits than its factorization.

1202210111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504985768 (or 3504985754 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1202210111221 its reverse (1221110122021), we get a palindrome (2423320233242).

The spelling of 1202210111221 in words is "one trillion, two hundred two billion, two hundred ten million, one hundred eleven thousand, two hundred twenty-one".