110220202120121 has 2 divisors, whose sum is σ = 110220202120122. Its totient is φ = 110220202120120.

The previous prime is 110220202120117. The next prime is 110220202120151. The reversal of 110220202120121 is 121021202022011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62341067844496 + 47879134275625 = 7895636^2 + 6919475^2 .

It is a cyclic number.

It is not a de Polignac number, because 110220202120121 - 2² = 110220202120117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 110220202120121.

It is not a weakly prime, because it can be changed into another prime (110220202120151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55110101060060 + 55110101060061.

It is an arithmetic number, because the mean of its divisors is an integer number (55110101060061).

Almost surely, 2^{110220202120121} is an apocalyptic number.

It is an amenable number.

110220202120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

110220202120121 is an equidigital number, since it uses as much as digits as its factorization.

110220202120121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 110220202120121 its reverse (121021202022011), we get a palindrome (231241404142132).

The spelling of 110220202120121 in words is "one hundred ten trillion, two hundred twenty billion, two hundred two million, one hundred twenty thousand, one hundred twenty-one".