1021210231 has 2 divisors, whose sum is σ = 1021210232. Its totient is φ = 1021210230.

The previous prime is 1021210133. The next prime is 1021210273. The reversal of 1021210231 is 1320121201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021210231 - 2⁷ = 1021210103 is a prime.

It is a super-2 number, since 2×1021210231² = 2085740671798146722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021210331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510605115 + 510605116.

It is an arithmetic number, because the mean of its divisors is an integer number (510605116).

Almost surely, 2^1021210231 is an apocalyptic number.

1021210231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021210231 is an equidigital number, since it uses as much as digits as its factorization.

1021210231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1021210231 is about 31956.3801297957. The cubic root of 1021210231 is about 1007.0206718180.

Adding to 1021210231 its reverse (1320121201), we get a palindrome (2341331432).

The spelling of 1021210231 in words is "one billion, twenty-one million, two hundred ten thousand, two hundred thirty-one".