1011230621 has 2 divisors, whose sum is σ = 1011230622. Its totient is φ = 1011230620.

The previous prime is 1011230569. The next prime is 1011230651. The reversal of 1011230621 is 1260321101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 865183396 + 146047225 = 29414^2 + 12085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011230621 - 2²⁶ = 944121757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011230621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011230651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505615310 + 505615311.

It is an arithmetic number, because the mean of its divisors is an integer number (505615311).

Almost surely, 2^1011230621 is an apocalyptic number.

It is an amenable number.

1011230621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011230621 is an equidigital number, since it uses as much as digits as its factorization.

1011230621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1011230621 is about 31799.8525311046. The cubic root of 1011230621 is about 1003.7296130270.

Adding to 1011230621 its reverse (1260321101), we get a palindrome (2271551722).

The spelling of 1011230621 in words is "one billion, eleven million, two hundred thirty thousand, six hundred twenty-one".