30020001221992 has 16 divisors (see below), whose sum is σ = 56287901844900. Its totient is φ = 15009894063360.

The previous prime is 30020001221939. The next prime is 30020001221993. The reversal of 30020001221992 is 29912210002003.

It can be written as a sum of positive squares in 2 ways, for example, as 28010281040676 + 2009720181316 = 5292474^2 + 1417646^2 .

It is not an unprimeable number, because it can be changed into a prime (30020001221993) 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, 12114609 + ... + 14380672.

Almost surely, 2^{30020001221992} is an apocalyptic number.

It is an amenable number.

30020001221992 is a deficient number, since it is larger than the sum of its proper divisors (26267900622908).

30020001221992 is a wasteful number, since it uses less digits than its factorization.

30020001221992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26636916 (or 26636912 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

Adding to 30020001221992 its reverse (29912210002003), we get a palindrome (59932211223995).

The spelling of 30020001221992 in words is "thirty trillion, twenty billion, one million, two hundred twenty-one thousand, nine hundred ninety-two".