30020001219991 has 2 divisors, whose sum is σ = 30020001219992. Its totient is φ = 30020001219990.

The previous prime is 30020001219983. The next prime is 30020001220003. The reversal of 30020001219991 is 19991210002003.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19991210002003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30020001219991 - 2³ = 30020001219983 is a prime.

It is a super-2 number, since 2×30020001219991² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30020001219991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30020001279991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15010000609995 + 15010000609996.

It is an arithmetic number, because the mean of its divisors is an integer number (15010000609996).

Almost surely, 2^{30020001219991} is an apocalyptic number.

30020001219991 is a deficient number, since it is larger than the sum of its proper divisors (1).

30020001219991 is an equidigital number, since it uses as much as digits as its factorization.

30020001219991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 37.

The spelling of 30020001219991 in words is "thirty trillion, twenty billion, one million, two hundred nineteen thousand, nine hundred ninety-one".