120056200661 has 4 divisors (see below), whose sum is σ = 120202077792. Its totient is φ = 119910323532.

The previous prime is 120056200651. The next prime is 120056200711. The reversal of 120056200661 is 166002650021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120056200661 - 2¹⁸ = 120055938517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120056200601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72937331 + ... + 72938976.

It is an arithmetic number, because the mean of its divisors is an integer number (30050519448).

Almost surely, 2^120056200661 is an apocalyptic number.

It is an amenable number.

120056200661 is a deficient number, since it is larger than the sum of its proper divisors (145877131).

120056200661 is an equidigital number, since it uses as much as digits as its factorization.

120056200661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145877130.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 120056200661 its reverse (166002650021), we get a palindrome (286058850682).

The spelling of 120056200661 in words is "one hundred twenty billion, fifty-six million, two hundred thousand, six hundred sixty-one".