2203121012020 has 24 divisors (see below), whose sum is σ = 4626585772200. Its totient is φ = 881242376832.

The previous prime is 2203121011997. The next prime is 2203121012023. The reversal of 2203121012020 is 202101213022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 984786308496 + 1218334703524 = 992364^2 + 1103782^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2203121011985 and 2203121012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203121012023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3691866 + ... + 4246894.

It is an arithmetic number, because the mean of its divisors is an integer number (192774407175).

Almost surely, 2^{2203121012020} is an apocalyptic number.

2203121012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2203121012020 is an abundant number, since it is smaller than the sum of its proper divisors (2423464760180).

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

2203121012020 is a wasteful number, since it uses less digits than its factorization.

2203121012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753507 (or 753505 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2203121012020 its reverse (202101213022), we get a palindrome (2405222225042).

The spelling of 2203121012020 in words is "two trillion, two hundred three billion, one hundred twenty-one million, twelve thousand, twenty".