121432101 has 16 divisors (see below), whose sum is σ = 185224704. Its totient is φ = 69320304.

The previous prime is 121432057. The next prime is 121432117. The reversal of 121432101 is 101234121.

It is not a de Polignac number, because 121432101 - 2¹³ = 121423909 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121437101) 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, 24690 + ... + 29196.

It is an arithmetic number, because the mean of its divisors is an integer number (11576544).

Almost surely, 2^121432101 is an apocalyptic number.

It is an amenable number.

121432101 is a deficient number, since it is larger than the sum of its proper divisors (63792603).

121432101 is a wasteful number, since it uses less digits than its factorization.

121432101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5800.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121432101 is about 11019.6234509170. The cubic root of 121432101 is about 495.1968077726.

Adding to 121432101 its reverse (101234121), we get a palindrome (222666222).

The spelling of 121432101 in words is "one hundred twenty-one million, four hundred thirty-two thousand, one hundred one".