1023212251 has 2 divisors, whose sum is σ = 1023212252. Its totient is φ = 1023212250.

The previous prime is 1023212233. The next prime is 1023212291. The reversal of 1023212251 is 1522123201.

It is a weak prime.

It is an emirp because it is prime and its reverse (1522123201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1023212251 - 2¹¹ = 1023210203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023212291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511606125 + 511606126.

It is an arithmetic number, because the mean of its divisors is an integer number (511606126).

Almost surely, 2^1023212251 is an apocalyptic number.

1023212251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023212251 is an equidigital number, since it uses as much as digits as its factorization.

1023212251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1023212251 is about 31987.6890537594. The cubic root of 1023212251 is about 1007.6783096654.

Adding to 1023212251 its reverse (1522123201), we get a palindrome (2545335452).

The spelling of 1023212251 in words is "one billion, twenty-three million, two hundred twelve thousand, two hundred fifty-one".