120001221101 has 4 divisors (see below), whose sum is σ = 120004107132. Its totient is φ = 119998335072.

The previous prime is 120001221077. The next prime is 120001221157. The reversal of 120001221101 is 101122100021.

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 43358067076 + 76643154025 = 208226^2 + 276845^2 .

It is a cyclic number.

It is not a de Polignac number, because 120001221101 - 2⁶ = 120001221037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001221181) 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, 1379720 + ... + 1464113.

It is an arithmetic number, because the mean of its divisors is an integer number (30001026783).

Almost surely, 2^120001221101 is an apocalyptic number.

It is an amenable number.

120001221101 is a deficient number, since it is larger than the sum of its proper divisors (2886031).

120001221101 is an equidigital number, since it uses as much as digits as its factorization.

120001221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886030.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120001221101 its reverse (101122100021), we get a palindrome (221123321122).

The spelling of 120001221101 in words is "one hundred twenty billion, one million, two hundred twenty-one thousand, one hundred one".