1011122201 has 4 divisors (see below), whose sum is σ = 1016967012. Its totient is φ = 1005277392.

The previous prime is 1011122191. The next prime is 1011122219. The reversal of 1011122201 is 1022211101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1022211101 = 677 ⋅1509913.

It can be written as a sum of positive squares in 2 ways, for example, as 720385600 + 290736601 = 26840^2 + 17051^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011122201 - 2¹⁸ = 1010860057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011124201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2922146 + ... + 2922491.

It is an arithmetic number, because the mean of its divisors is an integer number (254241753).

Almost surely, 2^1011122201 is an apocalyptic number.

It is an amenable number.

1011122201 is a deficient number, since it is larger than the sum of its proper divisors (5844811).

1011122201 is an equidigital number, since it uses as much as digits as its factorization.

1011122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844810.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1011122201 is about 31798.1477605222. The cubic root of 1011122201 is about 1003.6937398207.

Adding to 1011122201 its reverse (1022211101), we get a palindrome (2033333302).

Subtracting 1011122201 from its reverse (1022211101), we obtain a square (11088900 = 3330²).

The spelling of 1011122201 in words is "one billion, eleven million, one hundred twenty-two thousand, two hundred one".