200120021120121 has 16 divisors (see below), whose sum is σ = 273375236288448. Its totient is φ = 130140042713600.

The previous prime is 200120021120111. The next prime is 200120021120143. The reversal of 200120021120121 is 121021120021002.

It is a cyclic number.

It is not a de Polignac number, because 200120021120121 - 2¹³ = 200120021111929 is a prime.

It is a super-2 number, since 2×200120021120121² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 200120021120121.

It is not an unprimeable number, because it can be changed into a prime (200120021120111) 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, 119921835 + ... + 121579136.

It is an arithmetic number, because the mean of its divisors is an integer number (17085952268028).

Almost surely, 2^{200120021120121} is an apocalyptic number.

It is an amenable number.

200120021120121 is a deficient number, since it is larger than the sum of its proper divisors (73255215168327).

200120021120121 is a wasteful number, since it uses less digits than its factorization.

200120021120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241507752.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 200120021120121 its reverse (121021120021002), we get a palindrome (321141141141123).

The spelling of 200120021120121 in words is "two hundred trillion, one hundred twenty billion, twenty-one million, one hundred twenty thousand, one hundred twenty-one".