20011321330 has 128 divisors (see below), whose sum is σ = 48691238400. Its totient is φ = 5718435840.

The previous prime is 20011321321. The next prime is 20011321339. The reversal of 20011321330 is 3312311002.

It is an interprime number because it is at equal distance from previous prime (20011321321) and next prime (20011321339).

It is not an unprimeable number, because it can be changed into a prime (20011321339) 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, 1484782 + ... + 1498198.

It is an arithmetic number, because the mean of its divisors is an integer number (380400300).

Almost surely, 2^20011321330 is an apocalyptic number.

20011321330 is an abundant number, since it is smaller than the sum of its proper divisors (28679917070).

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

20011321330 is a wasteful number, since it uses less digits than its factorization.

20011321330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13604.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20011321330 its reverse (3312311002), we get a palindrome (23323632332).

The spelling of 20011321330 in words is "twenty billion, eleven million, three hundred twenty-one thousand, three hundred thirty".