21112003223011 has 32 divisors (see below), whose sum is σ = 23061901101120. Its totient is φ = 19257307545600.

The previous prime is 21112003222969. The next prime is 21112003223021. The reversal of 21112003223011 is 11032230021112.

It is not a de Polignac number, because 21112003223011 - 2²⁹ = 21111466352099 is a prime.

It is a super-2 number, since 2×21112003223011² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 21112003223011.

It is not an unprimeable number, because it can be changed into a prime (21112003223021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 816983451 + ... + 817009291.

It is an arithmetic number, because the mean of its divisors is an integer number (720684409410).

Almost surely, 2^{21112003223011} is an apocalyptic number.

21112003223011 is a deficient number, since it is larger than the sum of its proper divisors (1949897878109).

21112003223011 is a wasteful number, since it uses less digits than its factorization.

21112003223011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37975.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21112003223011 its reverse (11032230021112), we get a palindrome (32144233244123).

The spelling of 21112003223011 in words is "twenty-one trillion, one hundred twelve billion, three million, two hundred twenty-three thousand, eleven".