200202021212121 has 16 divisors (see below), whose sum is σ = 299475155790720. Its totient is φ = 132172208177040.

The previous prime is 200202021212117. The next prime is 200202021212177. The reversal of 200202021212121 is 121212120202002.

It is a happy number.

200202021212121 is a `hidden beast` number, since 200 + 20 + 20 + 212 + 1 + 212 + 1 = 666.

It is not a de Polignac number, because 200202021212121 - 2² = 200202021212117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200202021212094 and 200202021212103.

It is not an unprimeable number, because it can be changed into a prime (200202021212101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35994607290 + ... + 35994612851.

It is an arithmetic number, because the mean of its divisors is an integer number (18717197236920).

Almost surely, 2^{200202021212121} is an apocalyptic number.

It is an amenable number.

200202021212121 is a deficient number, since it is larger than the sum of its proper divisors (99273134578599).

200202021212121 is a wasteful number, since it uses less digits than its factorization.

200202021212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71989220253 (or 71989220247 counting only the distinct ones).

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

Adding to 200202021212121 its reverse (121212120202002), we get a palindrome (321414141414123).

The spelling of 200202021212121 in words is "two hundred trillion, two hundred two billion, twenty-one million, two hundred twelve thousand, one hundred twenty-one".