421221422001 has 8 divisors (see below), whose sum is σ = 561665873664. Its totient is φ = 280795625840.

The previous prime is 421221421967. The next prime is 421221422021. The reversal of 421221422001 is 100224122124.

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 421221422001 - 2¹¹ = 421221419953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421221422021) 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, 4611105 + ... + 4701566.

It is an arithmetic number, because the mean of its divisors is an integer number (70208234208).

Almost surely, 2^421221422001 is an apocalyptic number.

It is an amenable number.

421221422001 is a deficient number, since it is larger than the sum of its proper divisors (140444451663).

421221422001 is a wasteful number, since it uses less digits than its factorization.

421221422001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9327751.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 421221422001 its reverse (100224122124), we get a palindrome (521445544125).

The spelling of 421221422001 in words is "four hundred twenty-one billion, two hundred twenty-one million, four hundred twenty-two thousand, one".