10021221157 has 2 divisors, whose sum is σ = 10021221158. Its totient is φ = 10021221156.

The previous prime is 10021221151. The next prime is 10021221163. The reversal of 10021221157 is 75112212001.

10021221157 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (10021221151) and next prime (10021221163).

It can be written as a sum of positive squares in only one way, i.e., 7127749476 + 2893471681 = 84426^2 + 53791^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021221157 - 2²³ = 10012832549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021221151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010610578 + 5010610579.

It is an arithmetic number, because the mean of its divisors is an integer number (5010610579).

Almost surely, 2^10021221157 is an apocalyptic number.

It is an amenable number.

10021221157 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021221157 is an equidigital number, since it uses as much as digits as its factorization.

10021221157 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 22.

Adding to 10021221157 its reverse (75112212001), we get a palindrome (85133433158).

The spelling of 10021221157 in words is "ten billion, twenty-one million, two hundred twenty-one thousand, one hundred fifty-seven".