2011221332 has 6 divisors (see below), whose sum is σ = 3519637338. Its totient is φ = 1005610664.

The previous prime is 2011221293. The next prime is 2011221353. The reversal of 2011221332 is 2331221102.

It can be written as a sum of positive squares in only one way, i.e., 1398460816 + 612760516 = 37396^2 + 24754^2 .

It is a super-2 number, since 2×2011221332² = 8090022492583708448, 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 2011221332.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251402663 + ... + 251402670.

It is an arithmetic number, because the mean of its divisors is an integer number (586606223).

Almost surely, 2^2011221332 is an apocalyptic number.

It is an amenable number.

2011221332 is a deficient number, since it is larger than the sum of its proper divisors (1508416006).

2011221332 is a wasteful number, since it uses less digits than its factorization.

2011221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502805337 (or 502805335 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2011221332 is about 44846.6423715310. The cubic root of 2011221332 is about 1262.2729887818.

Adding to 2011221332 its reverse (2331221102), we get a palindrome (4342442434).

The spelling of 2011221332 in words is "two billion, eleven million, two hundred twenty-one thousand, three hundred thirty-two".