10202121110057 has 2 divisors, whose sum is σ = 10202121110058. Its totient is φ = 10202121110056.

The previous prime is 10202121110017. The next prime is 10202121110107. The reversal of 10202121110057 is 75001112120201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6099373635481 + 4102747474576 = 2469691^2 + 2025524^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202121110057 - 2⁶ = 10202121109993 is a prime.

It is not a weakly prime, because it can be changed into another prime (10202121110017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101060555028 + 5101060555029.

It is an arithmetic number, because the mean of its divisors is an integer number (5101060555029).

Almost surely, 2^{10202121110057} is an apocalyptic number.

It is an amenable number.

10202121110057 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202121110057 is an equidigital number, since it uses as much as digits as its factorization.

10202121110057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 10202121110057 its reverse (75001112120201), we get a palindrome (85203233230258).

The spelling of 10202121110057 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, one hundred ten thousand, fifty-seven".