200221121111121 has 96 divisors (see below), whose sum is σ = 319875168337920. Its totient is φ = 119675523340800.

The previous prime is 200221121111111. The next prime is 200221121111153. The reversal of 200221121111121 is 121111121122002.

It is a happy number.

200221121111121 is a `hidden beast` number, since 200 + 2 + 211 + 21 + 111 + 121 = 666.

It is not a de Polignac number, because 200221121111121 - 2¹³ = 200221121102929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200221121111094 and 200221121111103.

It is not an unprimeable number, because it can be changed into a prime (200221121111111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1827330480 + ... + 1827440046.

It is an arithmetic number, because the mean of its divisors is an integer number (3332033003520).

Almost surely, 2^{200221121111121} is an apocalyptic number.

It is an amenable number.

200221121111121 is a deficient number, since it is larger than the sum of its proper divisors (119654047226799).

200221121111121 is a wasteful number, since it uses less digits than its factorization.

200221121111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110507 (or 110504 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 200221121111121 its reverse (121111121122002), we get a palindrome (321332242233123).

The spelling of 200221121111121 in words is "two hundred trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twenty-one".