2211021023550 has 96 divisors (see below), whose sum is σ = 5722936422912. Its totient is φ = 563852446080.

The previous prime is 2211021023537. The next prime is 2211021023609. The reversal of 2211021023550 is 553201201122.

2211021023550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2211021023550² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2211021023550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17037007 + ... + 17166293.

It is an arithmetic number, because the mean of its divisors is an integer number (59613921072).

Almost surely, 2^{2211021023550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211021023550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2861468211456).

2211021023550 is an abundant number, since it is smaller than the sum of its proper divisors (3511915399362).

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

2211021023550 is a wasteful number, since it uses less digits than its factorization.

2211021023550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134282 (or 134277 counting only the distinct ones).

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

Adding to 2211021023550 its reverse (553201201122), we get a palindrome (2764222224672).

The spelling of 2211021023550 in words is "two trillion, two hundred eleven billion, twenty-one million, twenty-three thousand, five hundred fifty".