10821770297 has 32 divisors (see below), whose sum is σ = 12389842080. Its totient is φ = 9379399680.

The previous prime is 10821770153. The next prime is 10821770299. The reversal of 10821770297 is 79207712801.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 5270179216 + 5551591081 = 72596^2 + 74509^2 .

It is a cyclic number.

It is not a de Polignac number, because 10821770297 - 2⁸ = 10821770041 is a prime.

It is a super-2 number, since 2×10821770297² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10821770299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5764523 + ... + 5766399.

It is an arithmetic number, because the mean of its divisors is an integer number (387182565).

Almost surely, 2^10821770297 is an apocalyptic number.

It is an amenable number.

10821770297 is a deficient number, since it is larger than the sum of its proper divisors (1568071783).

10821770297 is a wasteful number, since it uses less digits than its factorization.

10821770297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333.

The product of its (nonzero) digits is 98784, while the sum is 44.

The spelling of 10821770297 in words is "ten billion, eight hundred twenty-one million, seven hundred seventy thousand, two hundred ninety-seven".