201201122010121 has 4 divisors (see below), whose sum is σ = 201308543860372. Its totient is φ = 201093700159872.

The previous prime is 201201122010079. The next prime is 201201122010137. The reversal of 201201122010121 is 121010221102102.

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 52512631833600 + 148688490176521 = 7246560^2 + 12193789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201201122010121 is a prime.

It is a super-2 number, since 2×201201122010121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201201122010095 and 201201122010104.

It is not an unprimeable number, because it can be changed into a prime (201201122013121) 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, 53710922316 + ... + 53710926061.

It is an arithmetic number, because the mean of its divisors is an integer number (50327135965093).

Almost surely, 2^{201201122010121} is an apocalyptic number.

It is an amenable number.

201201122010121 is a deficient number, since it is larger than the sum of its proper divisors (107421850251).

201201122010121 is a wasteful number, since it uses less digits than its factorization.

201201122010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107421850250.

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

Adding to 201201122010121 its reverse (121010221102102), we get a palindrome (322211343112223).

The spelling of 201201122010121 in words is "two hundred one trillion, two hundred one billion, one hundred twenty-two million, ten thousand, one hundred twenty-one".