2221511132 has 6 divisors (see below), whose sum is σ = 3887644488. Its totient is φ = 1110755564.

The previous prime is 2221511101. The next prime is 2221511203. The reversal of 2221511132 is 2311151222.

It is a super-2 number, since 2×2221511132² = 9870223419199842848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277688888 + ... + 277688895.

It is an arithmetic number, because the mean of its divisors is an integer number (647940748).

Almost surely, 2^2221511132 is an apocalyptic number.

It is an amenable number.

2221511132 is a deficient number, since it is larger than the sum of its proper divisors (1666133356).

2221511132 is a wasteful number, since it uses less digits than its factorization.

2221511132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555377787 (or 555377785 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 2221511132 is about 47132.9092248717. The cubic root of 2221511132 is about 1304.8166743353.

Adding to 2221511132 its reverse (2311151222), we get a palindrome (4532662354).

The spelling of 2221511132 in words is "two billion, two hundred twenty-one million, five hundred eleven thousand, one hundred thirty-two".