1220122123811 has 2 divisors, whose sum is σ = 1220122123812. Its totient is φ = 1220122123810.

The previous prime is 1220122123723. The next prime is 1220122123817. The reversal of 1220122123811 is 1183212210221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220122123811 - 2²² = 1220117929507 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220122123817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610061061905 + 610061061906.

It is an arithmetic number, because the mean of its divisors is an integer number (610061061906).

Almost surely, 2^{1220122123811} is an apocalyptic number.

1220122123811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220122123811 is an equidigital number, since it uses as much as digits as its factorization.

1220122123811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 26.

The spelling of 1220122123811 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred twenty-three thousand, eight hundred eleven".