3333420021 has 64 divisors (see below), whose sum is σ = 4933555200. Its totient is φ = 1994512896.

The previous prime is 3333419953. The next prime is 3333420023. The reversal of 3333420021 is 1200243333.

It is not a de Polignac number, because 3333420021 - 2²⁵ = 3299865589 is a prime.

It is a super-2 number, since 2×3333420021² = 22223378072807280882, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3333420021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3333420023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23981370 + ... + 23981508.

It is an arithmetic number, because the mean of its divisors is an integer number (77086800).

Almost surely, 2^3333420021 is an apocalyptic number.

It is an amenable number.

3333420021 is a deficient number, since it is larger than the sum of its proper divisors (1600135179).

3333420021 is a wasteful number, since it uses less digits than its factorization.

3333420021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 3333420021 is about 57735.7776512969. Note that the first 3 decimals coincide. The cubic root of 3333420021 is about 1493.8145314908.

Adding to 3333420021 its reverse (1200243333), we get a palindrome (4533663354).

The spelling of 3333420021 in words is "three billion, three hundred thirty-three million, four hundred twenty thousand, twenty-one".