61120321211 has 2 divisors, whose sum is σ = 61120321212. Its totient is φ = 61120321210.

The previous prime is 61120321159. The next prime is 61120321271. The reversal of 61120321211 is 11212302116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61120321211 - 2³⁴ = 43940452027 is a prime.

It is not a weakly prime, because it can be changed into another prime (61120321271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30560160605 + 30560160606.

It is an arithmetic number, because the mean of its divisors is an integer number (30560160606).

Almost surely, 2^61120321211 is an apocalyptic number.

61120321211 is a deficient number, since it is larger than the sum of its proper divisors (1).

61120321211 is an equidigital number, since it uses as much as digits as its factorization.

61120321211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 61120321211 its reverse (11212302116), we get a palindrome (72332623327).

The spelling of 61120321211 in words is "sixty-one billion, one hundred twenty million, three hundred twenty-one thousand, two hundred eleven".