2123220020 has 48 divisors (see below), whose sum is σ = 4558317120. Its totient is φ = 830478336.

The previous prime is 2123219993. The next prime is 2123220031. The reversal of 2123220020 is 200223212.

It is a junction number, because it is equal to n+sod(n) for n = 2123219977 and 2123220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223079 + ... + 232401.

It is an arithmetic number, because the mean of its divisors is an integer number (94964940).

Almost surely, 2^2123220020 is an apocalyptic number.

2123220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123220020 is an abundant number, since it is smaller than the sum of its proper divisors (2435097100).

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

2123220020 is a wasteful number, since it uses less digits than its factorization.

2123220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9584 (or 9582 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2123220020 is about 46078.4116479724. The cubic root of 2123220020 is about 1285.2817280108.

Adding to 2123220020 its reverse (200223212), we get a palindrome (2323443232).

The spelling of 2123220020 in words is "two billion, one hundred twenty-three million, two hundred twenty thousand, twenty".