121410421 has 4 divisors (see below), whose sum is σ = 132447744. Its totient is φ = 110373100.

The previous prime is 121410409. The next prime is 121410427. The reversal of 121410421 is 124014121.

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.

It is a cyclic number.

It is not a de Polignac number, because 121410421 - 2¹⁵ = 121377653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121410395 and 121410404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121410427) 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, 5518645 + ... + 5518666.

It is an arithmetic number, because the mean of its divisors is an integer number (33111936).

Almost surely, 2^121410421 is an apocalyptic number.

121410421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121410421 is a deficient number, since it is larger than the sum of its proper divisors (11037323).

121410421 is a wasteful number, since it uses less digits than its factorization.

121410421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11037322.

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

The square root of 121410421 is about 11018.6397073323. The cubic root of 121410421 is about 495.1673358683.

Adding to 121410421 its reverse (124014121), we get a palindrome (245424542).

The spelling of 121410421 in words is "one hundred twenty-one million, four hundred ten thousand, four hundred twenty-one".