20021011340 has 48 divisors (see below), whose sum is σ = 45896820480. Its totient is φ = 7275526080.

The previous prime is 20021011291. The next prime is 20021011357. The reversal of 20021011340 is 4311012002.

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, 309971 + ... + 368949.

It is an arithmetic number, because the mean of its divisors is an integer number (956183760).

Almost surely, 2^20021011340 is an apocalyptic number.

20021011340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021011340 is an abundant number, since it is smaller than the sum of its proper divisors (25875809140).

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

20021011340 is a wasteful number, since it uses less digits than its factorization.

20021011340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60542 (or 60540 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20021011340 its reverse (4311012002), we get a palindrome (24332023342).

The spelling of 20021011340 in words is "twenty billion, twenty-one million, eleven thousand, three hundred forty".