121442101 has 8 divisors (see below), whose sum is σ = 140275584. Its totient is φ = 103907520.

The previous prime is 121442089. The next prime is 121442107. The reversal of 121442101 is 101244121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121442101 - 2¹³ = 121433909 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 (121442107) 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, 324525 + ... + 324898.

It is an arithmetic number, because the mean of its divisors is an integer number (17534448).

Almost surely, 2^121442101 is an apocalyptic number.

121442101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121442101 is a deficient number, since it is larger than the sum of its proper divisors (18833483).

121442101 is a wasteful number, since it uses less digits than its factorization.

121442101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649451.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 121442101 is about 11020.0771775882. The cubic root of 121442101 is about 495.2104006422.

Adding to 121442101 its reverse (101244121), we get a palindrome (222686222).

The spelling of 121442101 in words is "one hundred twenty-one million, four hundred forty-two thousand, one hundred one".