61211120107 has 2 divisors, whose sum is σ = 61211120108. Its totient is φ = 61211120106.

The previous prime is 61211120099. The next prime is 61211120123. The reversal of 61211120107 is 70102111216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61211120107 - 2³ = 61211120099 is a prime.

It is not a weakly prime, because it can be changed into another prime (61211120137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30605560053 + 30605560054.

It is an arithmetic number, because the mean of its divisors is an integer number (30605560054).

Almost surely, 2^61211120107 is an apocalyptic number.

61211120107 is a deficient number, since it is larger than the sum of its proper divisors (1).

61211120107 is an equidigital number, since it uses as much as digits as its factorization.

61211120107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 22.

The spelling of 61211120107 in words is "sixty-one billion, two hundred eleven million, one hundred twenty thousand, one hundred seven".