20012210231021 has 8 divisors (see below), whose sum is σ = 20471342916864. Its totient is φ = 19554466752720.

The previous prime is 20012210231017. The next prime is 20012210231077. The reversal of 20012210231021 is 12013201221002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012210231021 - 2² = 20012210231017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012210230021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347272745 + ... + 347330366.

It is an arithmetic number, because the mean of its divisors is an integer number (2558917864608).

Almost surely, 2^{20012210231021} is an apocalyptic number.

It is an amenable number.

20012210231021 is a deficient number, since it is larger than the sum of its proper divisors (459132685843).

20012210231021 is an equidigital number, since it uses as much as digits as its factorization.

20012210231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694603771.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20012210231021 its reverse (12013201221002), we get a palindrome (32025411452023).

The spelling of 20012210231021 in words is "twenty trillion, twelve billion, two hundred ten million, two hundred thirty-one thousand, twenty-one".