1012122020 has 96 divisors (see below), whose sum is σ = 2753721600. Its totient is φ = 303450624.

The previous prime is 1012121989. The next prime is 1012122031. The reversal of 1012122020 is 202212101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1012121992 and 1012122010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19946 + ... + 49214.

It is an arithmetic number, because the mean of its divisors is an integer number (28684600).

Almost surely, 2^1012122020 is an apocalyptic number.

1012122020 is a gapful number since it is divisible by the number (10) 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 1012122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1376860800).

1012122020 is an abundant number, since it is smaller than the sum of its proper divisors (1741599580).

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

1012122020 is a wasteful number, since it uses less digits than its factorization.

1012122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29317 (or 29315 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1012122020 is about 31813.8652162858. The cubic root of 1012122020 is about 1004.0244553653.

Adding to 1012122020 its reverse (202212101), we get a palindrome (1214334121).

The spelling of 1012122020 in words is "one billion, twelve million, one hundred twenty-two thousand, twenty".