2122012020 has 72 divisors (see below), whose sum is σ = 6002775072. Its totient is φ = 560105600.

The previous prime is 2122011973. The next prime is 2122012021. The reversal of 2122012020 is 202102212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2122011987 and 2122012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122012021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 610327 + ... + 613793.

It is an arithmetic number, because the mean of its divisors is an integer number (83371876).

Almost surely, 2^2122012020 is an apocalyptic number.

2122012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3001387536).

2122012020 is an abundant number, since it is smaller than the sum of its proper divisors (3880763052).

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

2122012020 is a wasteful number, since it uses less digits than its factorization.

2122012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681 (or 3578 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2122012020 is about 46065.3016922716. The cubic root of 2122012020 is about 1285.0379293058.

Adding to 2122012020 its reverse (202102212), we get a palindrome (2324114232).

The spelling of 2122012020 in words is "two billion, one hundred twenty-two million, twelve thousand, twenty".