201011020120121 has 4 divisors (see below), whose sum is σ = 201046180353252. Its totient is φ = 200975859886992.

The previous prime is 201011020120081. The next prime is 201011020120199. The reversal of 201011020120121 is 121021020110102.

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 159076795879225 + 41934224240896 = 12612565^2 + 6475664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201011020120121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201011020120096 and 201011020120105.

It is not an unprimeable number, because it can be changed into a prime (201011020120621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17580107990 + ... + 17580119423.

It is an arithmetic number, because the mean of its divisors is an integer number (50261545088313).

Almost surely, 2^{201011020120121} is an apocalyptic number.

It is an amenable number.

201011020120121 is a deficient number, since it is larger than the sum of its proper divisors (35160233131).

201011020120121 is an equidigital number, since it uses as much as digits as its factorization.

201011020120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35160233130.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201011020120121 its reverse (121021020110102), we get a palindrome (322032040230223).

The spelling of 201011020120121 in words is "two hundred one trillion, eleven billion, twenty million, one hundred twenty thousand, one hundred twenty-one".