2150221736 has 24 divisors (see below), whose sum is σ = 4342748970. Its totient is φ = 992191776.

The previous prime is 2150221691. The next prime is 2150221739. The reversal of 2150221736 is 6371220512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2067520900 + 82700836 = 45470^2 + 9094^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2150221699 and 2150221708.

It is not an unprimeable number, because it can be changed into a prime (2150221739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 470615 + ... + 475161.

Almost surely, 2^2150221736 is an apocalyptic number.

2150221736 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2150221736 is an abundant number, since it is smaller than the sum of its proper divisors (2192527234).

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

2150221736 is an frugal number, since it uses more digits than its factorization.

2150221736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9113 (or 4562 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2150221736 is about 46370.4834566128. The cubic root of 2150221736 is about 1290.7072491371.

The spelling of 2150221736 in words is "two billion, one hundred fifty million, two hundred twenty-one thousand, seven hundred thirty-six".