20213203429999 has 2 divisors, whose sum is σ = 20213203430000. Its totient is φ = 20213203429998.

The previous prime is 20213203429949. The next prime is 20213203430023. The reversal of 20213203429999 is 99992430231202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20213203429999 - 2³⁵ = 20178843691631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213203429949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106601714999 + 10106601715000.

It is an arithmetic number, because the mean of its divisors is an integer number (10106601715000).

Almost surely, 2^{20213203429999} is an apocalyptic number.

20213203429999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213203429999 is an equidigital number, since it uses as much as digits as its factorization.

20213203429999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3779136, while the sum is 55.

The spelling of 20213203429999 in words is "twenty trillion, two hundred thirteen billion, two hundred three million, four hundred twenty-nine thousand, nine hundred ninety-nine".