1202202211221 has 32 divisors (see below), whose sum is σ = 2005628989440. Its totient is φ = 705103930800.

The previous prime is 1202202211207. The next prime is 1202202211247. The reversal of 1202202211221 is 1221122022021.

It is a happy number.

1202202211221 is a `hidden beast` number, since 1 + 2 + 0 + 220 + 221 + 1 + 221 = 666.

It is not a de Polignac number, because 1202202211221 - 2⁹ = 1202202210709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202202211194 and 1202202211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202202211271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65278195 + ... + 65296608.

It is an arithmetic number, because the mean of its divisors is an integer number (62675905920).

Almost surely, 2^{1202202211221} is an apocalyptic number.

1202202211221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202202211221 is a deficient number, since it is larger than the sum of its proper divisors (803426778219).

1202202211221 is a wasteful number, since it uses less digits than its factorization.

1202202211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130574854 (or 130574848 counting only the distinct ones).

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

Adding to 1202202211221 its reverse (1221122022021), we get a palindrome (2423324233242).

The spelling of 1202202211221 in words is "one trillion, two hundred two billion, two hundred two million, two hundred eleven thousand, two hundred twenty-one".