2103311221020 has 144 divisors (see below), whose sum is σ = 6825932174880. Its totient is φ = 522651916800.

The previous prime is 2103311221013. The next prime is 2103311221027. The reversal of 2103311221020 is 201221133012.

2103311221020 is a `hidden beast` number, since 210 + 331 + 1 + 22 + 102 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2103311221013) and next prime (2103311221027).

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

It is a junction number, because it is equal to n+sod(n) for n = 2103311220984 and 2103311221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103311221027) 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, 4832391 + ... + 5249630.

It is an arithmetic number, because the mean of its divisors is an integer number (47402306770).

Almost surely, 2^{2103311221020} is an apocalyptic number.

2103311221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103311221020 is an abundant number, since it is smaller than the sum of its proper divisors (4722620953860).

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

2103311221020 is a wasteful number, since it uses less digits than its factorization.

2103311221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10082116 (or 10082111 counting only the distinct ones).

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

Adding to 2103311221020 its reverse (201221133012), we get a palindrome (2304532354032).

The spelling of 2103311221020 in words is "two trillion, one hundred three billion, three hundred eleven million, two hundred twenty-one thousand, twenty".