1030012211621 has 2 divisors, whose sum is σ = 1030012211622. Its totient is φ = 1030012211620.

The previous prime is 1030012211617. The next prime is 1030012211623. The reversal of 1030012211621 is 1261122100301.

1030012211621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 995505062500 + 34507149121 = 997750^2 + 185761^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030012211621 - 2² = 1030012211617 is a prime.

It is a Sophie Germain prime.

Together with 1030012211623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1030012211593 and 1030012211602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1030012211623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515006105810 + 515006105811.

It is an arithmetic number, because the mean of its divisors is an integer number (515006105811).

Almost surely, 2^{1030012211621} is an apocalyptic number.

It is an amenable number.

1030012211621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030012211621 is an equidigital number, since it uses as much as digits as its factorization.

1030012211621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1030012211621 its reverse (1261122100301), we get a palindrome (2291134311922).

The spelling of 1030012211621 in words is "one trillion, thirty billion, twelve million, two hundred eleven thousand, six hundred twenty-one".