1220120195837 has 2 divisors, whose sum is σ = 1220120195838. Its totient is φ = 1220120195836.

The previous prime is 1220120195779. The next prime is 1220120195843. The reversal of 1220120195837 is 7385910210221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1179002900761 + 41117295076 = 1085819^2 + 202774^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220120195837 - 2²⁴ = 1220103418621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220120195794 and 1220120195803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220120195737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610060097918 + 610060097919.

It is an arithmetic number, because the mean of its divisors is an integer number (610060097919).

Almost surely, 2^{1220120195837} is an apocalyptic number.

It is an amenable number.

1220120195837 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220120195837 is an equidigital number, since it uses as much as digits as its factorization.

1220120195837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 1220120195837 in words is "one trillion, two hundred twenty billion, one hundred twenty million, one hundred ninety-five thousand, eight hundred thirty-seven".