10212099857 has 2 divisors, whose sum is σ = 10212099858. Its totient is φ = 10212099856.

The previous prime is 10212099839. The next prime is 10212099893. The reversal of 10212099857 is 75899021201.

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., 8222136976 + 1989962881 = 90676^2 + 44609^2 .

It is an emirp because it is prime and its reverse (75899021201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10212099857 - 2¹⁴ = 10212083473 is a prime.

It is a super-3 number, since 3×10212099857³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (10212096857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106049928 + 5106049929.

It is an arithmetic number, because the mean of its divisors is an integer number (5106049929).

Almost surely, 2^10212099857 is an apocalyptic number.

It is an amenable number.

10212099857 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212099857 is an equidigital number, since it uses as much as digits as its factorization.

10212099857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 44.

The spelling of 10212099857 in words is "ten billion, two hundred twelve million, ninety-nine thousand, eight hundred fifty-seven".