20102220112057 has 2 divisors, whose sum is σ = 20102220112058. Its totient is φ = 20102220112056.

The previous prime is 20102220112003. The next prime is 20102220112081. The reversal of 20102220112057 is 75021102220102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17843899433616 + 2258320678441 = 4224204^2 + 1502771^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102220112057 - 2²³ = 20102211723449 is a prime.

It is not a weakly prime, because it can be changed into another prime (20102220112157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051110056028 + 10051110056029.

It is an arithmetic number, because the mean of its divisors is an integer number (10051110056029).

Almost surely, 2^{20102220112057} is an apocalyptic number.

It is an amenable number.

20102220112057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102220112057 is an equidigital number, since it uses as much as digits as its factorization.

20102220112057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 20102220112057 its reverse (75021102220102), we get a palindrome (95123322332159).

The spelling of 20102220112057 in words is "twenty trillion, one hundred two billion, two hundred twenty million, one hundred twelve thousand, fifty-seven".