120211201221977 has 2 divisors, whose sum is σ = 120211201221978. Its totient is φ = 120211201221976.

The previous prime is 120211201221973. The next prime is 120211201222093. The reversal of 120211201221977 is 779122102112021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120202629980416 + 8571241561 = 10963696^2 + 92581^2 .

It is a cyclic number.

It is not a de Polignac number, because 120211201221977 - 2² = 120211201221973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120211201221977.

It is not a weakly prime, because it can be changed into another prime (120211201221973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105600610988 + 60105600610989.

It is an arithmetic number, because the mean of its divisors is an integer number (60105600610989).

Almost surely, 2^{120211201221977} is an apocalyptic number.

It is an amenable number.

120211201221977 is a deficient number, since it is larger than the sum of its proper divisors (1).

120211201221977 is an equidigital number, since it uses as much as digits as its factorization.

120211201221977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 38.

Adding to 120211201221977 its reverse (779122102112021), we get a palindrome (899333303333998).

The spelling of 120211201221977 in words is "one hundred twenty trillion, two hundred eleven billion, two hundred one million, two hundred twenty-one thousand, nine hundred seventy-seven".