20010203120 has 20 divisors (see below), whose sum is σ = 46523722440. Its totient is φ = 8004081216.

The previous prime is 20010203117. The next prime is 20010203131. The reversal of 20010203120 is 2130201002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125063690 + ... + 125063849.

It is an arithmetic number, because the mean of its divisors is an integer number (2326186122).

Almost surely, 2^20010203120 is an apocalyptic number.

20010203120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010203120 is an abundant number, since it is smaller than the sum of its proper divisors (26513519320).

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

20010203120 is a wasteful number, since it uses less digits than its factorization.

20010203120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250127552 (or 250127546 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20010203120 its reverse (2130201002), we get a palindrome (22140404122).

The spelling of 20010203120 in words is "twenty billion, ten million, two hundred three thousand, one hundred twenty".