20102211330 has 64 divisors (see below), whose sum is σ = 50136192000. Its totient is φ = 5152815360.

The previous prime is 20102211307. The next prime is 20102211331. The reversal of 20102211330 is 3311220102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20102211331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66036 + ... + 211104.

It is an arithmetic number, because the mean of its divisors is an integer number (783378000).

Almost surely, 2^20102211330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20102211330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25068096000).

20102211330 is an abundant number, since it is smaller than the sum of its proper divisors (30033980670).

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

20102211330 is a wasteful number, since it uses less digits than its factorization.

20102211330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145259.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20102211330 its reverse (3311220102), we get a palindrome (23413431432).

The spelling of 20102211330 in words is "twenty billion, one hundred two million, two hundred eleven thousand, three hundred thirty".