120227861 has 16 divisors (see below), whose sum is σ = 132276480. Its totient is φ = 108604800.

The previous prime is 120227851. The next prime is 120227873. The reversal of 120227861 is 168722021.

It is a cyclic number.

It is not a de Polignac number, because 120227861 - 2¹⁸ = 119965717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120227851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142880 + ... + 143718.

It is an arithmetic number, because the mean of its divisors is an integer number (8267280).

Almost surely, 2^120227861 is an apocalyptic number.

It is an amenable number.

120227861 is a deficient number, since it is larger than the sum of its proper divisors (12048619).

120227861 is a wasteful number, since it uses less digits than its factorization.

120227861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 120227861 is about 10964.8466017542. The cubic root of 120227861 is about 493.5544138868.

Adding to 120227861 its reverse (168722021), we get a palindrome (288949882).

The spelling of 120227861 in words is "one hundred twenty million, two hundred twenty-seven thousand, eight hundred sixty-one".