2231122066 has 4 divisors (see below), whose sum is σ = 3346683102. Its totient is φ = 1115561032.

The previous prime is 2231121983. The next prime is 2231122073. The reversal of 2231122066 is 6602211322.

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., 1793099025 + 438023041 = 42345^2 + 20929^2 .

It is a super-3 number, since 3×2231122066³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231122066.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557780515 + ... + 557780518.

Almost surely, 2^2231122066 is an apocalyptic number.

2231122066 is a deficient number, since it is larger than the sum of its proper divisors (1115561036).

2231122066 is a wasteful number, since it uses less digits than its factorization.

2231122066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115561035.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2231122066 is about 47234.7548527565. The cubic root of 2231122066 is about 1306.6956454278.

Adding to 2231122066 its reverse (6602211322), we get a palindrome (8833333388).

The spelling of 2231122066 in words is "two billion, two hundred thirty-one million, one hundred twenty-two thousand, sixty-six".