20021321301043 has 2 divisors, whose sum is σ = 20021321301044. Its totient is φ = 20021321301042.

The previous prime is 20021321301011. The next prime is 20021321301133. The reversal of 20021321301043 is 34010312312002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20021321301043 - 2⁵ = 20021321301011 is a prime.

It is not a weakly prime, because it can be changed into another prime (20121321301043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010660650521 + 10010660650522.

It is an arithmetic number, because the mean of its divisors is an integer number (10010660650522).

Almost surely, 2^{20021321301043} is an apocalyptic number.

20021321301043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021321301043 is an equidigital number, since it uses as much as digits as its factorization.

20021321301043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20021321301043 its reverse (34010312312002), we get a palindrome (54031633613045).

The spelling of 20021321301043 in words is "twenty trillion, twenty-one billion, three hundred twenty-one million, three hundred one thousand, forty-three".