1021270499 has 2 divisors, whose sum is σ = 1021270500. Its totient is φ = 1021270498.

The previous prime is 1021270423. The next prime is 1021270507. The reversal of 1021270499 is 9940721201.

It is a strong prime.

It is an emirp because it is prime and its reverse (9940721201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021270499 - 2¹² = 1021266403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021273499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510635249 + 510635250.

It is an arithmetic number, because the mean of its divisors is an integer number (510635250).

Almost surely, 2^1021270499 is an apocalyptic number.

1021270499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021270499 is an equidigital number, since it uses as much as digits as its factorization.

1021270499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 1021270499 is about 31957.3230887695. The cubic root of 1021270499 is about 1007.0404816234.

The spelling of 1021270499 in words is "one billion, twenty-one million, two hundred seventy thousand, four hundred ninety-nine".