2201202212121 has 24 divisors (see below), whose sum is σ = 3468613696704. Its totient is φ = 1334041702560.

The previous prime is 2201202212119. The next prime is 2201202212159. The reversal of 2201202212121 is 1212122021022.

It is a happy number.

2201202212121 is a `hidden beast` number, since 220 + 12 + 0 + 221 + 212 + 1 = 666.

It is not a de Polignac number, because 2201202212121 - 2¹ = 2201202212119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201202212094 and 2201202212103.

It is not an unprimeable number, because it can be changed into a prime (2201202212221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8766100 + ... + 9013706.

It is an arithmetic number, because the mean of its divisors is an integer number (144525570696).

Almost surely, 2^{2201202212121} is an apocalyptic number.

It is an amenable number.

2201202212121 is a deficient number, since it is larger than the sum of its proper divisors (1267411484583).

2201202212121 is a wasteful number, since it uses less digits than its factorization.

2201202212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337421 (or 337418 counting only the distinct ones).

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

Adding to 2201202212121 its reverse (1212122021022), we get a palindrome (3413324233143).

The spelling of 2201202212121 in words is "two trillion, two hundred one billion, two hundred two million, two hundred twelve thousand, one hundred twenty-one".