11221013001 has 16 divisors (see below), whose sum is σ = 16345614528. Its totient is φ = 6790555200.

The previous prime is 11221012997. The next prime is 11221013003. The reversal of 11221013001 is 10031012211.

It is not a de Polignac number, because 11221013001 - 2² = 11221012997 is a prime.

It is a super-2 number, since 2×11221013001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11221013003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228790 + ... + 273471.

It is an arithmetic number, because the mean of its divisors is an integer number (1021600908).

Almost surely, 2^11221013001 is an apocalyptic number.

11221013001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11221013001 is a deficient number, since it is larger than the sum of its proper divisors (5124601527).

11221013001 is a wasteful number, since it uses less digits than its factorization.

11221013001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502952.

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

Adding to 11221013001 its reverse (10031012211), we get a palindrome (21252025212).

The spelling of 11221013001 in words is "eleven billion, two hundred twenty-one million, thirteen thousand, one".