161227212043 has 2 divisors, whose sum is σ = 161227212044. Its totient is φ = 161227212042.

The previous prime is 161227212001. The next prime is 161227212053. The reversal of 161227212043 is 340212722161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161227212043 - 2²¹ = 161225114891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161227211996 and 161227212014.

It is not a weakly prime, because it can be changed into another prime (161227212053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80613606021 + 80613606022.

It is an arithmetic number, because the mean of its divisors is an integer number (80613606022).

Almost surely, 2^161227212043 is an apocalyptic number.

161227212043 is a deficient number, since it is larger than the sum of its proper divisors (1).

161227212043 is an equidigital number, since it uses as much as digits as its factorization.

161227212043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 161227212043 in words is "one hundred sixty-one billion, two hundred twenty-seven million, two hundred twelve thousand, forty-three".