121000011101 has 4 divisors (see below), whose sum is σ = 121012279104. Its totient is φ = 120987743100.

The previous prime is 121000011091. The next prime is 121000011131. The reversal of 121000011101 is 101110000121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101110000121 = 13 ⋅7777692317.

It is a cyclic number.

It is not a de Polignac number, because 121000011101 - 2¹⁸ = 120999748957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000011131) 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, 6119195 + ... + 6138936.

It is an arithmetic number, because the mean of its divisors is an integer number (30253069776).

Almost surely, 2^121000011101 is an apocalyptic number.

It is an amenable number.

121000011101 is a deficient number, since it is larger than the sum of its proper divisors (12268003).

121000011101 is an equidigital number, since it uses as much as digits as its factorization.

121000011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12268002.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 121000011101 its reverse (101110000121), we get a palindrome (222110011222).

The spelling of 121000011101 in words is "one hundred twenty-one billion, eleven thousand, one hundred one".