20021031130004 has 24 divisors (see below), whose sum is σ = 36663713674560. Its totient is φ = 9548150315264.

The previous prime is 20021031129991. The next prime is 20021031130033. The reversal of 20021031130004 is 40003113012002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308211014 + ... + 308275965.

It is an arithmetic number, because the mean of its divisors is an integer number (1527654736440).

Almost surely, 2^{20021031130004} is an apocalyptic number.

It is an amenable number.

20021031130004 is a deficient number, since it is larger than the sum of its proper divisors (16642682544556).

20021031130004 is a wasteful number, since it uses less digits than its factorization.

20021031130004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616487359 (or 616487357 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20021031130004 its reverse (40003113012002), we get a palindrome (60024144142006).

The spelling of 20021031130004 in words is "twenty trillion, twenty-one billion, thirty-one million, one hundred thirty thousand, four".