110220040021961 has 2 divisors, whose sum is σ = 110220040021962. Its totient is φ = 110220040021960.

The previous prime is 110220040021933. The next prime is 110220040022023. The reversal of 110220040021961 is 169120040022011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109868131240000 + 351908781961 = 10481800^2 + 593219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110220040021961 is a prime.

It is not a weakly prime, because it can be changed into another prime (110220040021661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55110020010980 + 55110020010981.

It is an arithmetic number, because the mean of its divisors is an integer number (55110020010981).

Almost surely, 2^{110220040021961} is an apocalyptic number.

It is an amenable number.

110220040021961 is a deficient number, since it is larger than the sum of its proper divisors (1).

110220040021961 is an equidigital number, since it uses as much as digits as its factorization.

110220040021961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

Adding to 110220040021961 its reverse (169120040022011), we get a palindrome (279340080043972).

The spelling of 110220040021961 in words is "one hundred ten trillion, two hundred twenty billion, forty million, twenty-one thousand, nine hundred sixty-one".