20200021001121 has 64 divisors (see below), whose sum is σ = 31003143342080. Its totient is φ = 11594883801600.

The previous prime is 20200021001119. The next prime is 20200021001131. The reversal of 20200021001121 is 12110012000202.

It is not a de Polignac number, because 20200021001121 - 2¹ = 20200021001119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200021001097 and 20200021001106.

It is not an unprimeable number, because it can be changed into a prime (20200021001131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98844396 + ... + 99048546.

It is an arithmetic number, because the mean of its divisors is an integer number (484424114720).

Almost surely, 2^{20200021001121} is an apocalyptic number.

It is an amenable number.

20200021001121 is a deficient number, since it is larger than the sum of its proper divisors (10803122340959).

20200021001121 is a wasteful number, since it uses less digits than its factorization.

20200021001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206246.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20200021001121 its reverse (12110012000202), we get a palindrome (32310033001323).

The spelling of 20200021001121 in words is "twenty trillion, two hundred billion, twenty-one million, one thousand, one hundred twenty-one".