20201102140 has 48 divisors (see below), whose sum is σ = 42564463200. Its totient is φ = 8053420032.

The previous prime is 20201102111. The next prime is 20201102143. The reversal of 20201102140 is 4120110202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201102140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201102143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10014412 + ... + 10016428.

It is an arithmetic number, because the mean of its divisors is an integer number (886759650).

Almost surely, 2^20201102140 is an apocalyptic number.

20201102140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201102140 is an abundant number, since it is smaller than the sum of its proper divisors (22363361060).

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

20201102140 is a wasteful number, since it uses less digits than its factorization.

20201102140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454 (or 3452 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20201102140 its reverse (4120110202), we get a palindrome (24321212342).

The spelling of 20201102140 in words is "twenty billion, two hundred one million, one hundred two thousand, one hundred forty".