2125220020 has 48 divisors (see below), whose sum is σ = 5564216448. Its totient is φ = 662405760.

The previous prime is 2125220011. The next prime is 2125220029. The reversal of 2125220020 is 200225212.

It is an interprime number because it is at equal distance from previous prime (2125220011) and next prime (2125220029).

It is a junction number, because it is equal to n+sod(n) for n = 2125219976 and 2125220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125220029) 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, 688467 + ... + 691546.

It is an arithmetic number, because the mean of its divisors is an integer number (115921176).

Almost surely, 2^2125220020 is an apocalyptic number.

2125220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2125220020 is an abundant number, since it is smaller than the sum of its proper divisors (3438996428).

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

2125220020 is a wasteful number, since it uses less digits than its factorization.

2125220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380040 (or 1380038 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2125220020 is about 46100.1086766615. The cubic root of 2125220020 is about 1285.6851650430.

Adding to 2125220020 its reverse (200225212), we get a palindrome (2325445232).

The spelling of 2125220020 in words is "two billion, one hundred twenty-five million, two hundred twenty thousand, twenty".