200121220221201 has 24 divisors (see below), whose sum is σ = 292180602981696. Its totient is φ = 131978460641760.

The previous prime is 200121220221151. The next prime is 200121220221277. The reversal of 200121220221201 is 102122022121002.

It is a happy number.

200121220221201 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 21 + 220 + 221 + 201 = 666.

It is not a de Polignac number, because 200121220221201 - 2⁶ = 200121220221137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200121220222201) 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, 113835715 + ... + 115580328.

It is an arithmetic number, because the mean of its divisors is an integer number (12174191790904).

Almost surely, 2^{200121220221201} is an apocalyptic number.

It is an amenable number.

200121220221201 is a deficient number, since it is larger than the sum of its proper divisors (92059382760495).

200121220221201 is a wasteful number, since it uses less digits than its factorization.

200121220221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229417093 (or 229417090 counting only the distinct ones).

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

Adding to 200121220221201 its reverse (102122022121002), we get a palindrome (302243242342203).

The spelling of 200121220221201 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, two hundred one".