202002012111121 has 4 divisors (see below), whose sum is σ = 202032989270244. Its totient is φ = 201971034952000.

The previous prime is 202002012111079. The next prime is 202002012111127. The reversal of 202002012111121 is 121111210200202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 172147808901121 + 29854203210000 = 13120511^2 + 5463900^2 .

It is a cyclic number.

It is not a de Polignac number, because 202002012111121 - 2²³ = 202002003722513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202002012111095 and 202002012111104.

It is not an unprimeable number, because it can be changed into a prime (202002012111127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15488569780 + ... + 15488582821.

It is an arithmetic number, because the mean of its divisors is an integer number (50508247317561).

Almost surely, 2^{202002012111121} is an apocalyptic number.

It is an amenable number.

202002012111121 is a deficient number, since it is larger than the sum of its proper divisors (30977159123).

202002012111121 is an equidigital number, since it uses as much as digits as its factorization.

202002012111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30977159122.

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

Adding to 202002012111121 its reverse (121111210200202), we get a palindrome (323113222311323).

It can be divided in two parts, 20200201 and 2111121, that added together give a palindrome (22311322).

The spelling of 202002012111121 in words is "two hundred two trillion, two billion, twelve million, one hundred eleven thousand, one hundred twenty-one".