33021403420 has 12 divisors (see below), whose sum is σ = 69344947224. Its totient is φ = 13208561360.

The previous prime is 33021403409. The next prime is 33021403427. The reversal of 33021403420 is 2430412033.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 33021403391 and 33021403400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33021403427) 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, 825535066 + ... + 825535105.

It is an arithmetic number, because the mean of its divisors is an integer number (5778745602).

Almost surely, 2^33021403420 is an apocalyptic number.

It is an amenable number.

33021403420 is an abundant number, since it is smaller than the sum of its proper divisors (36323543804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33021403420 is a wasteful number, since it uses less digits than its factorization.

33021403420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651070180 (or 1651070178 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 33021403420 its reverse (2430412033), we get a palindrome (35451815453).

The spelling of 33021403420 in words is "thirty-three billion, twenty-one million, four hundred three thousand, four hundred twenty".