200021220121111 has 8 divisors (see below), whose sum is σ = 202004296317648. Its totient is φ = 198038196240000.

The previous prime is 200021220121109. The next prime is 200021220121117. The reversal of 200021220121111 is 111121022120002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200021220121111 - 2¹ = 200021220121109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021220121117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5371810 + ... + 20709871.

It is an arithmetic number, because the mean of its divisors is an integer number (25250537039706).

Almost surely, 2^{200021220121111} is an apocalyptic number.

200021220121111 is a deficient number, since it is larger than the sum of its proper divisors (1983076196537).

200021220121111 is a wasteful number, since it uses less digits than its factorization.

200021220121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26157713.

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

Adding to 200021220121111 its reverse (111121022120002), we get a palindrome (311142242241113).

The spelling of 200021220121111 in words is "two hundred trillion, twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred eleven".