202340011221 has 6 divisors (see below), whose sum is σ = 292268905110. Its totient is φ = 134893340808.

The previous prime is 202340011213. The next prime is 202340011231. The reversal of 202340011221 is 122110043202.

It is a happy number.

202340011221 is a `hidden beast` number, since 20 + 23 + 400 + 1 + 1 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 140096747025 + 62243264196 = 374295^2 + 249486^2 .

It is not a de Polignac number, because 202340011221 - 2³ = 202340011213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202340011194 and 202340011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202340011201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11241111726 + ... + 11241111743.

It is an arithmetic number, because the mean of its divisors is an integer number (48711484185).

Almost surely, 2^202340011221 is an apocalyptic number.

It is an amenable number.

202340011221 is a deficient number, since it is larger than the sum of its proper divisors (89928893889).

202340011221 is a wasteful number, since it uses less digits than its factorization.

202340011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22482223475 (or 22482223472 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 202340011221 its reverse (122110043202), we get a palindrome (324450054423).

The spelling of 202340011221 in words is "two hundred two billion, three hundred forty million, eleven thousand, two hundred twenty-one".