33130321220 has 48 divisors (see below), whose sum is σ = 70751596608. Its totient is φ = 13027992960.

The previous prime is 33130321193. The next prime is 33130321247. The reversal of 33130321220 is 2212303133.

It is an interprime number because it is at equal distance from previous prime (33130321193) and next prime (33130321247).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 33130321192 and 33130321201.

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, 2730407 + ... + 2742513.

It is an arithmetic number, because the mean of its divisors is an integer number (1473991596).

Almost surely, 2^33130321220 is an apocalyptic number.

It is an amenable number.

33130321220 is an abundant number, since it is smaller than the sum of its proper divisors (37621275388).

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

33130321220 is a wasteful number, since it uses less digits than its factorization.

33130321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14420 (or 14418 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 33130321220 its reverse (2212303133), we get a palindrome (35342624353).

The spelling of 33130321220 in words is "thirty-three billion, one hundred thirty million, three hundred twenty-one thousand, two hundred twenty".