661241122 has 32 divisors (see below), whose sum is σ = 1077598080. Its totient is φ = 303367680.

The previous prime is 661241111. The next prime is 661241137. The reversal of 661241122 is 221142166.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215922 + ... + 218962.

It is an arithmetic number, because the mean of its divisors is an integer number (33674940).

Almost surely, 2^661241122 is an apocalyptic number.

661241122 is a deficient number, since it is larger than the sum of its proper divisors (416356958).

661241122 is a wasteful number, since it uses less digits than its factorization.

661241122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258.

The product of its digits is 1152, while the sum is 25.

The square root of 661241122 is about 25714.6091162203. The cubic root of 661241122 is about 871.2041818001.

Adding to 661241122 its reverse (221142166), we get a palindrome (882383288).

The spelling of 661241122 in words is "six hundred sixty-one million, two hundred forty-one thousand, one hundred twenty-two".