1202211022221 has 12 divisors (see below), whose sum is σ = 1894393126080. Its totient is φ = 728612740680.

The previous prime is 1202211022217. The next prime is 1202211022223. The reversal of 1202211022221 is 1222201122021.

It is a happy number.

1202211022221 is a `hidden beast` number, since 120 + 221 + 102 + 2 + 221 = 666.

It is not a de Polignac number, because 1202211022221 - 2² = 1202211022217 is a prime.

It is a super-2 number, since 2×1202211022221² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1202211022194 and 1202211022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202211022223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6071772741 + ... + 6071772938.

It is an arithmetic number, because the mean of its divisors is an integer number (157866093840).

Almost surely, 2^{1202211022221} is an apocalyptic number.

1202211022221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202211022221 is a deficient number, since it is larger than the sum of its proper divisors (692182103859).

1202211022221 is a wasteful number, since it uses less digits than its factorization.

1202211022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12143545696 (or 12143545693 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1202211022221 its reverse (1222201122021), we get a palindrome (2424412144242).

The spelling of 1202211022221 in words is "one trillion, two hundred two billion, two hundred eleven million, twenty-two thousand, two hundred twenty-one".