202012110111121 has 8 divisors (see below), whose sum is σ = 202062004812360. Its totient is φ = 201962219569152.

The previous prime is 202012110111109. The next prime is 202012110111131. The reversal of 202012110111121 is 121111011210202.

It can be written as a sum of positive squares in 4 ways, for example, as 282242500225 + 201729867610896 = 531265^2 + 14203164^2 .

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 202012110111121 - 2¹⁵ = 202012110078353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202012110111095 and 202012110111104.

It is not an unprimeable number, because it can be changed into a prime (202012110111131) 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, 97255465 + ... + 99310873.

It is an arithmetic number, because the mean of its divisors is an integer number (25257750601545).

Almost surely, 2^{202012110111121} is an apocalyptic number.

It is an amenable number.

202012110111121 is a deficient number, since it is larger than the sum of its proper divisors (49894701239).

202012110111121 is a wasteful number, since it uses less digits than its factorization.

202012110111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079635.

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

Adding to 202012110111121 its reverse (121111011210202), we get a palindrome (323123121321323).

The spelling of 202012110111121 in words is "two hundred two trillion, twelve billion, one hundred ten million, one hundred eleven thousand, one hundred twenty-one".