30021021071 has 2 divisors, whose sum is σ = 30021021072. Its totient is φ = 30021021070.

The previous prime is 30021021029. The next prime is 30021021077. The reversal of 30021021071 is 17012012003.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30021021071 - 2⁶ = 30021021007 is a prime.

It is a super-2 number, since 2×30021021071² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30021021077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15010510535 + 15010510536.

It is an arithmetic number, because the mean of its divisors is an integer number (15010510536).

Almost surely, 2^30021021071 is an apocalyptic number.

30021021071 is a deficient number, since it is larger than the sum of its proper divisors (1).

30021021071 is an equidigital number, since it uses as much as digits as its factorization.

30021021071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 17.

Adding to 30021021071 its reverse (17012012003), we get a palindrome (47033033074).

The spelling of 30021021071 in words is "thirty billion, twenty-one million, twenty-one thousand, seventy-one".