2211171072240 has 160 divisors (see below), whose sum is σ = 7386943205376. Its totient is φ = 543917122560.

The previous prime is 2211171072211. The next prime is 2211171072241. The reversal of 2211171072240 is 422701711122.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2211171072198 and 2211171072207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211171072241) 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, 4348627 + ... + 4830413.

Almost surely, 2^{2211171072240} is an apocalyptic number.

2211171072240 is a gapful number since it is divisible by the number (20) 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 2211171072240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3693471602688).

2211171072240 is an abundant number, since it is smaller than the sum of its proper divisors (5175772133136).

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

2211171072240 is a wasteful number, since it uses less digits than its factorization.

2211171072240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483287 (or 483281 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

Adding to 2211171072240 its reverse (422701711122), we get a palindrome (2633872783362).

The spelling of 2211171072240 in words is "two trillion, two hundred eleven billion, one hundred seventy-one million, seventy-two thousand, two hundred forty".