20121033131101 has 16 divisors (see below), whose sum is σ = 23440699036800. Its totient is φ = 16915315097088.

The previous prime is 20121033131093. The next prime is 20121033131119. The reversal of 20121033131101 is 10113133012102.

It is a cyclic number.

It is not a de Polignac number, because 20121033131101 - 2³ = 20121033131093 is a prime.

It is a super-2 number, since 2×20121033131101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121033131161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109896796 + ... + 110079733.

It is an arithmetic number, because the mean of its divisors is an integer number (1465043689800).

Almost surely, 2^{20121033131101} is an apocalyptic number.

It is an amenable number.

20121033131101 is a deficient number, since it is larger than the sum of its proper divisors (3319665905699).

20121033131101 is a wasteful number, since it uses less digits than its factorization.

20121033131101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219976788.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 20121033131101 its reverse (10113133012102), we get a palindrome (30234166143203).

The spelling of 20121033131101 in words is "twenty trillion, one hundred twenty-one billion, thirty-three million, one hundred thirty-one thousand, one hundred one".