2206211550 has 72 divisors (see below), whose sum is σ = 5812298376. Its totient is φ = 553704960.

The previous prime is 2206211521. The next prime is 2206211551. The reversal of 2206211550 is 551126022.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2206211550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206211551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17904 + ... + 68796.

Almost surely, 2^2206211550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2206211550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2906149188).

2206211550 is an abundant number, since it is smaller than the sum of its proper divisors (3606086826).

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

2206211550 is a wasteful number, since it uses less digits than its factorization.

2206211550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50942 (or 50920 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2206211550 is about 46970.3262709554. The cubic root of 2206211550 is about 1301.8143404115.

Adding to 2206211550 its reverse (551126022), we get a palindrome (2757337572).

The spelling of 2206211550 in words is "two billion, two hundred six million, two hundred eleven thousand, five hundred fifty".