20201201121311 has 48 divisors (see below), whose sum is σ = 24586073376480. Its totient is φ = 16536331284480.

The previous prime is 20201201121289. The next prime is 20201201121329. The reversal of 20201201121311 is 11312110210202.

It is a happy number.

It is not a de Polignac number, because 20201201121311 - 2³⁸ = 19926323214367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20201201121311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201201121371) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17619695 + ... + 18731151.

It is an arithmetic number, because the mean of its divisors is an integer number (512209862010).

Almost surely, 2^{20201201121311} is an apocalyptic number.

20201201121311 is a deficient number, since it is larger than the sum of its proper divisors (4384872255169).

20201201121311 is a wasteful number, since it uses less digits than its factorization.

20201201121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111704 (or 1111697 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20201201121311 its reverse (11312110210202), we get a palindrome (31513311331513).

The spelling of 20201201121311 in words is "twenty trillion, two hundred one billion, two hundred one million, one hundred twenty-one thousand, three hundred eleven".