200021020102111 has 16 divisors (see below), whose sum is σ = 218623219767904. Its totient is φ = 181878267884544.

The previous prime is 200021020102091. The next prime is 200021020102213. The reversal of 200021020102111 is 111201020120002.

It is a cyclic number.

It is not a de Polignac number, because 200021020102111 - 2²³ = 200021011713503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200021020102091 and 200021020102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021020132111) 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, 336111655 + ... + 336706231.

It is an arithmetic number, because the mean of its divisors is an integer number (13663951235494).

Almost surely, 2^{200021020102111} is an apocalyptic number.

200021020102111 is a deficient number, since it is larger than the sum of its proper divisors (18602199665793).

200021020102111 is a wasteful number, since it uses less digits than its factorization.

200021020102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980890.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200021020102111 its reverse (111201020120002), we get a palindrome (311222040222113).

The spelling of 200021020102111 in words is "two hundred trillion, twenty-one billion, twenty million, one hundred two thousand, one hundred eleven".