121421423419 has 8 divisors (see below), whose sum is σ = 124251488240. Its totient is φ = 118591645536.

The previous prime is 121421423369. The next prime is 121421423467. The reversal of 121421423419 is 914324124121.

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 121421423419 - 2⁹ = 121421422907 is a prime.

It is a super-2 number, since 2×121421423419² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121421429419) 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, 953017 + ... + 1072885.

It is an arithmetic number, because the mean of its divisors is an integer number (15531436030).

Almost surely, 2^121421423419 is an apocalyptic number.

121421423419 is a deficient number, since it is larger than the sum of its proper divisors (2830064821).

121421423419 is a wasteful number, since it uses less digits than its factorization.

121421423419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143469.

The product of its digits is 13824, while the sum is 34.

The spelling of 121421423419 in words is "one hundred twenty-one billion, four hundred twenty-one million, four hundred twenty-three thousand, four hundred nineteen".