11012122001 has 8 divisors (see below), whose sum is σ = 11076799080. Its totient is φ = 10947589632.

The previous prime is 11012121997. The next prime is 11012122031. The reversal of 11012122001 is 10022121011.

It can be written as a sum of positive squares in 4 ways, for example, as 5201871376 + 5810250625 = 72124^2 + 76225^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11012122001 - 2² = 11012121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012122031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118391 + ... + 189843.

It is an arithmetic number, because the mean of its divisors is an integer number (1384599885).

Almost surely, 2^11012122001 is an apocalyptic number.

It is an amenable number.

11012122001 is a deficient number, since it is larger than the sum of its proper divisors (64677079).

11012122001 is an equidigital number, since it uses as much as digits as its factorization.

11012122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72355.

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

Adding to 11012122001 its reverse (10022121011), we get a palindrome (21034243012).

The spelling of 11012122001 in words is "eleven billion, twelve million, one hundred twenty-two thousand, one".