11221220001011 has 8 divisors (see below), whose sum is σ = 11884275625920. Its totient is φ = 10565410885992.

The previous prime is 11221220000993. The next prime is 11221220001091. The reversal of 11221220001011 is 11010002212211.

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 11221220001011 - 2¹⁰ = 11221219999987 is a prime.

It is a super-2 number, since 2×11221220001011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221220001091) 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, 1811624285 + ... + 1811630478.

It is an arithmetic number, because the mean of its divisors is an integer number (1485534453240).

Almost surely, 2^{11221220001011} is an apocalyptic number.

11221220001011 is a deficient number, since it is larger than the sum of its proper divisors (663055624909).

11221220001011 is a wasteful number, since it uses less digits than its factorization.

11221220001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623254945.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11221220001011 its reverse (11010002212211), we get a palindrome (22231222213222).

The spelling of 11221220001011 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty million, one thousand, eleven".