1020001122 has 96 divisors (see below), whose sum is σ = 2760735744. Its totient is φ = 265420800.

The previous prime is 1020001063. The next prime is 1020001133. The reversal of 1020001122 is 2211000201.

It is a Harshad number since it is a multiple of its sum of digits (9).

1020001122 is a modest number, since divided by 1122 gives 1020 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58722 + ... + 74082.

It is an arithmetic number, because the mean of its divisors is an integer number (28757664).

Almost surely, 2^1020001122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020001122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1380367872).

1020001122 is an abundant number, since it is smaller than the sum of its proper divisors (1740734622).

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

1020001122 is a wasteful number, since it uses less digits than its factorization.

1020001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15424 (or 15421 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1020001122 is about 31937.4564109292. The cubic root of 1020001122 is about 1006.6230786550.

Adding to 1020001122 its reverse (2211000201), we get a palindrome (3231001323).

The spelling of 1020001122 in words is "one billion, twenty million, one thousand, one hundred twenty-two".