421334452001 has 4 divisors (see below), whose sum is σ = 422528034372. Its totient is φ = 420140869632.

The previous prime is 421334451971. The next prime is 421334452087. The reversal of 421334452001 is 100254433124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93061603600 + 328272848401 = 305060^2 + 572951^2 .

It is a cyclic number.

It is not a de Polignac number, because 421334452001 - 2²⁶ = 421267343137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421334452601) 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, 596790656 + ... + 596791361.

It is an arithmetic number, because the mean of its divisors is an integer number (105632008593).

Almost surely, 2^421334452001 is an apocalyptic number.

It is an amenable number.

421334452001 is a deficient number, since it is larger than the sum of its proper divisors (1193582371).

421334452001 is a wasteful number, since it uses less digits than its factorization.

421334452001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193582370.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 421334452001 its reverse (100254433124), we get a palindrome (521588885125).

The spelling of 421334452001 in words is "four hundred twenty-one billion, three hundred thirty-four million, four hundred fifty-two thousand, one".