2221201131 has 24 divisors (see below), whose sum is σ = 3053977920. Its totient is φ = 1435970592.

The previous prime is 2221201109. The next prime is 2221201141. The reversal of 2221201131 is 1311021222.

2221201131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2221201131 - 2¹¹ = 2221199083 is a prime.

It is a super-2 number, since 2×2221201131² = 9867468928711358322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2221201131.

It is not an unprimeable number, because it can be changed into a prime (2221201141) 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, 1555840 + ... + 1557266.

It is an arithmetic number, because the mean of its divisors is an integer number (127249080).

Almost surely, 2^2221201131 is an apocalyptic number.

2221201131 is a deficient number, since it is larger than the sum of its proper divisors (832776789).

2221201131 is a wasteful number, since it uses less digits than its factorization.

2221201131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883 (or 1846 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2221201131 is about 47129.6205267982. The cubic root of 2221201131 is about 1304.7559779195.

Adding to 2221201131 its reverse (1311021222), we get a palindrome (3532222353).

The spelling of 2221201131 in words is "two billion, two hundred twenty-one million, two hundred one thousand, one hundred thirty-one".