1220112099977 has 2 divisors, whose sum is σ = 1220112099978. Its totient is φ = 1220112099976.

The previous prime is 1220112099953. The next prime is 1220112100027. The reversal of 1220112099977 is 7799902110221.

It is a happy number.

It is an a-pointer prime, because the next prime (1220112100027) can be obtained adding 1220112099977 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 778975699216 + 441136400761 = 882596^2 + 664181^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220112099977 - 2³⁴ = 1202932230793 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220112099917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610056049988 + 610056049989.

It is an arithmetic number, because the mean of its divisors is an integer number (610056049989).

Almost surely, 2^{1220112099977} is an apocalyptic number.

It is an amenable number.

1220112099977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220112099977 is an equidigital number, since it uses as much as digits as its factorization.

1220112099977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 50.

The spelling of 1220112099977 in words is "one trillion, two hundred twenty billion, one hundred twelve million, ninety-nine thousand, nine hundred seventy-seven".