1010339921 has 2 divisors, whose sum is σ = 1010339922. Its totient is φ = 1010339920.

The previous prime is 1010339909. The next prime is 1010339923. The reversal of 1010339921 is 1299330101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1005587521 + 4752400 = 31711^2 + 2180^2 .

It is an emirp because it is prime and its reverse (1299330101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1010339921 - 2¹⁸ = 1010077777 is a prime.

Together with 1010339923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1010339923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505169960 + 505169961.

It is an arithmetic number, because the mean of its divisors is an integer number (505169961).

Almost surely, 2^1010339921 is an apocalyptic number.

It is an amenable number.

1010339921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010339921 is an equidigital number, since it uses as much as digits as its factorization.

1010339921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1010339921 is about 31785.8446639381. The cubic root of 1010339921 is about 1003.4348287765.

The spelling of 1010339921 in words is "one billion, ten million, three hundred thirty-nine thousand, nine hundred twenty-one".