1001011122 has 20 divisors (see below), whose sum is σ = 2243006766. Its totient is φ = 333670320.

The previous prime is 1001011117. The next prime is 1001011127. The reversal of 1001011122 is 2211101001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1001011117) and next prime (1001011127).

It can be written as a sum of positive squares in only one way, i.e., 957964401 + 43046721 = 30951^2 + 6561^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1001011127) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3089379 + ... + 3089702.

Almost surely, 2^1001011122 is an apocalyptic number.

1001011122 is an abundant number, since it is smaller than the sum of its proper divisors (1241995644).

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

1001011122 is an equidigital number, since it uses as much as digits as its factorization.

1001011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6179095 (or 6179086 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1001011122 is about 31638.7598050240. The cubic root of 1001011122 is about 1000.3369271340.

Adding to 1001011122 its reverse (2211101001), we get a palindrome (3212112123).

The spelling of 1001011122 in words is "one billion, one million, eleven thousand, one hundred twenty-two".