20012002092 has 144 divisors (see below), whose sum is σ = 54783630720. Its totient is φ = 6138720000.

The previous prime is 20012002091. The next prime is 20012002147. The reversal of 20012002092 is 29020021002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20012002091) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7037623 + ... + 7040465.

It is an arithmetic number, because the mean of its divisors is an integer number (380441880).

Almost surely, 2^20012002092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012002092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27391815360).

20012002092 is an abundant number, since it is smaller than the sum of its proper divisors (34771628628).

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

20012002092 is a wasteful number, since it uses less digits than its factorization.

20012002092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164 (or 3159 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20012002092 its reverse (29020021002), we get a palindrome (49032023094).

The spelling of 20012002092 in words is "twenty billion, twelve million, two thousand, ninety-two".