403232020021 has 4 divisors (see below), whose sum is σ = 404095472352. Its totient is φ = 402368567692.

The previous prime is 403232020019. The next prime is 403232020031. The reversal of 403232020021 is 120020232304.

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 not a de Polignac number, because 403232020021 - 2¹ = 403232020019 is a prime.

It is a super-2 number, since 2×403232020021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403232020031) 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, 431725465 + ... + 431726398.

It is an arithmetic number, because the mean of its divisors is an integer number (101023868088).

Almost surely, 2^403232020021 is an apocalyptic number.

It is an amenable number.

403232020021 is a deficient number, since it is larger than the sum of its proper divisors (863452331).

403232020021 is an equidigital number, since it uses as much as digits as its factorization.

403232020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863452330.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 403232020021 its reverse (120020232304), we get a palindrome (523252252325).

The spelling of 403232020021 in words is "four hundred three billion, two hundred thirty-two million, twenty thousand, twenty-one".