1012021122 has 64 divisors (see below), whose sum is σ = 2380492800. Its totient is φ = 280801920.

The previous prime is 1012021117. The next prime is 1012021123. The reversal of 1012021122 is 2211202101.

It is a junction number, because it is equal to n+sod(n) for n = 1012021098 and 1012021107.

It is not an unprimeable number, because it can be changed into a prime (1012021123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 410329 + ... + 412787.

It is an arithmetic number, because the mean of its divisors is an integer number (37195200).

Almost surely, 2^1012021122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012021122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190246400).

1012021122 is an abundant number, since it is smaller than the sum of its proper divisors (1368471678).

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

1012021122 is a wasteful number, since it uses less digits than its factorization.

1012021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1012021122 is about 31812.2794216321. The cubic root of 1012021122 is about 1003.9910906708.

Adding to 1012021122 its reverse (2211202101), we get a palindrome (3223223223).

The spelling of 1012021122 in words is "one billion, twelve million, twenty-one thousand, one hundred twenty-two".