11220210072 has 96 divisors (see below), whose sum is σ = 31549998480. Its totient is φ = 3735745920.

The previous prime is 11220210041. The next prime is 11220210073. The reversal of 11220210072 is 27001202211.

It is a happy number.

It is a super-2 number, since 2×11220210072² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220210073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1981998 + ... + 1987650.

Almost surely, 2^11220210072 is an apocalyptic number.

11220210072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11220210072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15774999240).

11220210072 is an abundant number, since it is smaller than the sum of its proper divisors (20329788408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11220210072 is a wasteful number, since it uses less digits than its factorization.

11220210072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695 (or 6679 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

Adding to 11220210072 its reverse (27001202211), we get a palindrome (38221412283).

The spelling of 11220210072 in words is "eleven billion, two hundred twenty million, two hundred ten thousand, seventy-two".