2011221092 has 6 divisors (see below), whose sum is σ = 3519636918. Its totient is φ = 1005610544.

The previous prime is 2011221073. The next prime is 2011221119. The reversal of 2011221092 is 2901221102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1998447616 + 12773476 = 44704^2 + 3574^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251402633 + ... + 251402640.

It is an arithmetic number, because the mean of its divisors is an integer number (586606153).

Almost surely, 2^2011221092 is an apocalyptic number.

It is an amenable number.

2011221092 is a deficient number, since it is larger than the sum of its proper divisors (1508415826).

2011221092 is a wasteful number, since it uses less digits than its factorization.

2011221092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502805277 (or 502805275 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2011221092 is about 44846.6396957453. The cubic root of 2011221092 is about 1262.2729385726.

Adding to 2011221092 its reverse (2901221102), we get a palindrome (4912442194).

The spelling of 2011221092 in words is "two billion, eleven million, two hundred twenty-one thousand, ninety-two".