20021031130005 has 24 divisors (see below), whose sum is σ = 34703608898400. Its totient is φ = 10677733031520.

The previous prime is 20021031129991. The next prime is 20021031130033. The reversal of 20021031130005 is 50003113012002.

It is not a de Polignac number, because 20021031130005 - 2⁹ = 20021031129493 is a prime.

It is a super-2 number, since 2×20021031130005² (a number of 27 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 20021031130005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141450 + ... + 6329460.

It is an arithmetic number, because the mean of its divisors is an integer number (1445983704100).

Almost surely, 2^{20021031130005} is an apocalyptic number.

It is an amenable number.

20021031130005 is a deficient number, since it is larger than the sum of its proper divisors (14682577768395).

20021031130005 is a wasteful number, since it uses less digits than its factorization.

20021031130005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6259921 (or 6259918 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 20021031130005 its reverse (50003113012002), we get a palindrome (70024144142007).

The spelling of 20021031130005 in words is "twenty trillion, twenty-one billion, thirty-one million, one hundred thirty thousand, five".