200221020212121 has 12 divisors (see below), whose sum is σ = 289217074901040. Its totient is φ = 133476556482360.

The previous prime is 200221020212113. The next prime is 200221020212141. The reversal of 200221020212121 is 121212020122002.

It is a happy number.

200221020212121 is a `hidden beast` number, since 200 + 2 + 210 + 20 + 21 + 212 + 1 = 666.

200221020212121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 200221020212121 - 2³ = 200221020212113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200221020212094 and 200221020212103.

It is not an unprimeable number, because it can be changed into a prime (200221020212111) 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, 343330731 + ... + 343913408.

It is an arithmetic number, because the mean of its divisors is an integer number (24101422908420).

Almost surely, 2^{200221020212121} is an apocalyptic number.

It is an amenable number.

200221020212121 is a deficient number, since it is larger than the sum of its proper divisors (88996054688919).

200221020212121 is a wasteful number, since it uses less digits than its factorization.

200221020212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687276516 (or 687276513 counting only the distinct ones).

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

Adding to 200221020212121 its reverse (121212020122002), we get a palindrome (321433040334123).

The spelling of 200221020212121 in words is "two hundred trillion, two hundred twenty-one billion, twenty million, two hundred twelve thousand, one hundred twenty-one".