2120221119977 has 2 divisors, whose sum is σ = 2120221119978. Its totient is φ = 2120221119976.

The previous prime is 2120221119931. The next prime is 2120221120177. The reversal of 2120221119977 is 7799111220212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1670967290281 + 449253829696 = 1292659^2 + 670264^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120221119977 - 2³⁸ = 1845343213033 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120221139977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060110559988 + 1060110559989.

It is an arithmetic number, because the mean of its divisors is an integer number (1060110559989).

Almost surely, 2^{2120221119977} is an apocalyptic number.

It is an amenable number.

2120221119977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120221119977 is an equidigital number, since it uses as much as digits as its factorization.

2120221119977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 44.

The spelling of 2120221119977 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred nineteen thousand, nine hundred seventy-seven".