30221012032031 has 4 divisors (see below), whose sum is σ = 30222284894592. Its totient is φ = 30219739169472.

The previous prime is 30221012032007. The next prime is 30221012032039. The reversal of 30221012032031 is 13023021012203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30221012032031 is a prime.

It is a super-2 number, since 2×30221012032031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30221012031994 and 30221012032012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221012032039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636395666 + ... + 636443151.

It is an arithmetic number, because the mean of its divisors is an integer number (7555571223648).

Almost surely, 2^{30221012032031} is an apocalyptic number.

30221012032031 is a deficient number, since it is larger than the sum of its proper divisors (1272862561).

30221012032031 is a wasteful number, since it uses less digits than its factorization.

30221012032031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272862560.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30221012032031 its reverse (13023021012203), we get a palindrome (43244033044234).

The spelling of 30221012032031 in words is "thirty trillion, two hundred twenty-one billion, twelve million, thirty-two thousand, thirty-one".