201121011101 has 8 divisors (see below), whose sum is σ = 210110307264. Its totient is φ = 192152123680.

The previous prime is 201121011089. The next prime is 201121011109. The reversal of 201121011101 is 101110121102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-201121011101 is a prime.

It is a super-2 number, since 2×201121011101² (a number of 23 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 (201121011109) 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, 5082035 + ... + 5121456.

It is an arithmetic number, because the mean of its divisors is an integer number (26263788408).

Almost surely, 2^201121011101 is an apocalyptic number.

It is an amenable number.

201121011101 is a deficient number, since it is larger than the sum of its proper divisors (8989296163).

201121011101 is a wasteful number, since it uses less digits than its factorization.

201121011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10204371.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 201121011101 its reverse (101110121102), we get a palindrome (302231132203).

The spelling of 201121011101 in words is "two hundred one billion, one hundred twenty-one million, eleven thousand, one hundred one".