121430001 has 16 divisors (see below), whose sum is σ = 201858048. Its totient is φ = 63080400.

The previous prime is 121429981. The next prime is 121430009. The reversal of 121430001 is 100034121.

It is a happy number.

It is not a de Polignac number, because 121430001 - 2⁶ = 121429937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121430009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262605 + ... + 263066.

It is an arithmetic number, because the mean of its divisors is an integer number (12616128).

Almost surely, 2^121430001 is an apocalyptic number.

121430001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121430001 is a deficient number, since it is larger than the sum of its proper divisors (80428047).

121430001 is a wasteful number, since it uses less digits than its factorization.

121430001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525692.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 121430001 is about 11019.5281659425. The cubic root of 121430001 is about 495.1939531751.

Adding to 121430001 its reverse (100034121), we get a palindrome (221464122).

The spelling of 121430001 in words is "one hundred twenty-one million, four hundred thirty thousand, one".