20333001220 has 48 divisors (see below), whose sum is σ = 48807480960. Its totient is φ = 6970132224.

The previous prime is 20333001211. The next prime is 20333001233. The reversal of 20333001220 is 2210033302.

It is a super-2 number, since 2×20333001220² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20333001194 and 20333001203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1360227 + ... + 1375093.

It is an arithmetic number, because the mean of its divisors is an integer number (1016822520).

Almost surely, 2^20333001220 is an apocalyptic number.

20333001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20333001220 is an abundant number, since it is smaller than the sum of its proper divisors (28474479740).

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

20333001220 is a wasteful number, since it uses less digits than its factorization.

20333001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24652 (or 24650 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20333001220 its reverse (2210033302), we get a palindrome (22543034522).

The spelling of 20333001220 in words is "twenty billion, three hundred thirty-three million, one thousand, two hundred twenty".