421102201220533 has 4 divisors (see below), whose sum is σ = 481259658537760. Its totient is φ = 360944743903308.

The previous prime is 421102201220497. The next prime is 421102201220549. The reversal of 421102201220533 is 335022102201124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421102201220533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421102201220033) 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, 30078728658603 + ... + 30078728658616.

It is an arithmetic number, because the mean of its divisors is an integer number (120314914634440).

Almost surely, 2^{421102201220533} is an apocalyptic number.

It is an amenable number.

421102201220533 is a deficient number, since it is larger than the sum of its proper divisors (60157457317227).

421102201220533 is an equidigital number, since it uses as much as digits as its factorization.

421102201220533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60157457317226.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 421102201220533 its reverse (335022102201124), we get a palindrome (756124303421657).

The spelling of 421102201220533 in words is "four hundred twenty-one trillion, one hundred two billion, two hundred one million, two hundred twenty thousand, five hundred thirty-three".