20021112000 has 168 divisors, whose sum is σ = 71619112032. Its totient is φ = 5338944000.

The previous prime is 20021111969. The next prime is 20021112053. The reversal of 20021112000 is 21112002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67036 + ... + 211035.

Almost surely, 2^20021112000 is an apocalyptic number.

20021112000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021112000 is an abundant number, since it is smaller than the sum of its proper divisors (51598000032).

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

20021112000 is a wasteful number, since it uses less digits than its factorization.

20021112000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278104 (or 278081 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20021112000 its reverse (21112002), we get a palindrome (20042224002).

The spelling of 20021112000 in words is "twenty billion, twenty-one million, one hundred twelve thousand".