20302122002221 has 16 divisors (see below), whose sum is σ = 21479008768000. Its totient is φ = 19136079320688.

The previous prime is 20302122002179. The next prime is 20302122002243. The reversal of 20302122002221 is 12220022120302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20302122002221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302122002021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93838456 + ... + 94054558.

It is an arithmetic number, because the mean of its divisors is an integer number (1342438048000).

Almost surely, 2^{20302122002221} is an apocalyptic number.

It is an amenable number.

20302122002221 is a deficient number, since it is larger than the sum of its proper divisors (1176886765779).

20302122002221 is a wasteful number, since it uses less digits than its factorization.

20302122002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241168.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20302122002221 its reverse (12220022120302), we get a palindrome (32522144122523).

The spelling of 20302122002221 in words is "twenty trillion, three hundred two billion, one hundred twenty-two million, two thousand, two hundred twenty-one".