121212301421 has 8 divisors (see below), whose sum is σ = 121478669088. Its totient is φ = 120946014000.

The previous prime is 121212301411. The next prime is 121212301459. The reversal of 121212301421 is 124103212121.

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 121212301421 - 2¹⁰ = 121212300397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121212301393 and 121212301402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212301411) 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, 3784886 + ... + 3816776.

It is an arithmetic number, because the mean of its divisors is an integer number (15184833636).

Almost surely, 2^121212301421 is an apocalyptic number.

It is an amenable number.

121212301421 is a deficient number, since it is larger than the sum of its proper divisors (266367667).

121212301421 is an equidigital number, since it uses as much as digits as its factorization.

121212301421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40123.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121212301421 its reverse (124103212121), we get a palindrome (245315513542).

The spelling of 121212301421 in words is "one hundred twenty-one billion, two hundred twelve million, three hundred one thousand, four hundred twenty-one".