121421201403 has 8 divisors (see below), whose sum is σ = 163845476928. Its totient is φ = 79972196744.

The previous prime is 121421201351. The next prime is 121421201471. The reversal of 121421201403 is 304102124121.

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 121421201403 - 2¹³ = 121421193211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121421201403.

It is not an unprimeable number, because it can be changed into a prime (121421201003) 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, 243817425 + ... + 243817922.

It is an arithmetic number, because the mean of its divisors is an integer number (20480684616).

Almost surely, 2^121421201403 is an apocalyptic number.

121421201403 is a deficient number, since it is larger than the sum of its proper divisors (42424275525).

121421201403 is an equidigital number, since it uses as much as digits as its factorization.

121421201403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487635433.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 121421201403 its reverse (304102124121), we get a palindrome (425523325524).

The spelling of 121421201403 in words is "one hundred twenty-one billion, four hundred twenty-one million, two hundred one thousand, four hundred three".