10210121220157 has 2 divisors, whose sum is σ = 10210121220158. Its totient is φ = 10210121220156.

The previous prime is 10210121220151. The next prime is 10210121220193. The reversal of 10210121220157 is 75102212101201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8034395919001 + 2175725301156 = 2834501^2 + 1475034^2 .

It is a cyclic number.

It is not a de Polignac number, because 10210121220157 - 2³ = 10210121220149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10210121220151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105060610078 + 5105060610079.

It is an arithmetic number, because the mean of its divisors is an integer number (5105060610079).

Almost surely, 2^{10210121220157} is an apocalyptic number.

It is an amenable number.

10210121220157 is a deficient number, since it is larger than the sum of its proper divisors (1).

10210121220157 is an equidigital number, since it uses as much as digits as its factorization.

10210121220157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 25.

Adding to 10210121220157 its reverse (75102212101201), we get a palindrome (85312333321358).

The spelling of 10210121220157 in words is "ten trillion, two hundred ten billion, one hundred twenty-one million, two hundred twenty thousand, one hundred fifty-seven".