2011121122 has 4 divisors (see below), whose sum is σ = 3016681686. Its totient is φ = 1005560560.

The previous prime is 2011121113. The next prime is 2011121129. The reversal of 2011121122 is 2211211102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1603121521 + 407999601 = 40039^2 + 20199^2 .

It is not an unprimeable number, because it can be changed into a prime (2011121129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502780279 + ... + 502780282.

Almost surely, 2^2011121122 is an apocalyptic number.

2011121122 is a deficient number, since it is larger than the sum of its proper divisors (1005560564).

2011121122 is a wasteful number, since it uses less digits than its factorization.

2011121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005560563.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2011121122 is about 44845.5251056334. The cubic root of 2011121122 is about 1262.2520239953.

Adding to 2011121122 its reverse (2211211102), we get a palindrome (4222332224).

The spelling of 2011121122 in words is "two billion, eleven million, one hundred twenty-one thousand, one hundred twenty-two".