200111122020121 has 12 divisors (see below), whose sum is σ = 217205530834320. Its totient is φ = 184277104405680.

The previous prime is 200111122020091. The next prime is 200111122020127. The reversal of 200111122020121 is 121020221111002.

It is not a de Polignac number, because 200111122020121 - 2¹³ = 200111122011929 is a prime.

It is a super-2 number, since 2×200111122020121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200111122020095 and 200111122020104.

It is not an unprimeable number, because it can be changed into a prime (200111122020127) 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, 1412923795 + ... + 1413065416.

It is an arithmetic number, because the mean of its divisors is an integer number (18100460902860).

Almost surely, 2^{200111122020121} is an apocalyptic number.

It is an amenable number.

200111122020121 is a deficient number, since it is larger than the sum of its proper divisors (17094408814199).

200111122020121 is a wasteful number, since it uses less digits than its factorization.

200111122020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825989656 (or 2825989643 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 200111122020121 its reverse (121020221111002), we get a palindrome (321131343131123).

The spelling of 200111122020121 in words is "two hundred trillion, one hundred eleven billion, one hundred twenty-two million, twenty thousand, one hundred twenty-one".