1012102321 has 2 divisors, whose sum is σ = 1012102322. Its totient is φ = 1012102320.

The previous prime is 1012102313. The next prime is 1012102339. The reversal of 1012102321 is 1232012101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1008951696 + 3150625 = 31764^2 + 1775^2 .

It is an emirp because it is prime and its reverse (1232012101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012102321 - 2³ = 1012102313 is a prime.

It is a super-2 number, since 2×1012102321² = 2048702216347174082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1012102381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506051160 + 506051161.

It is an arithmetic number, because the mean of its divisors is an integer number (506051161).

Almost surely, 2^1012102321 is an apocalyptic number.

It is an amenable number.

1012102321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012102321 is an equidigital number, since it uses as much as digits as its factorization.

1012102321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1012102321 is about 31813.5556170636. Note that the first 3 decimals coincide. The cubic root of 1012102321 is about 1004.0179415242.

Adding to 1012102321 its reverse (1232012101), we get a palindrome (2244114422).

The spelling of 1012102321 in words is "one billion, twelve million, one hundred two thousand, three hundred twenty-one".