20302312312221 has 8 divisors (see below), whose sum is σ = 27580499745120. Its totient is φ = 13279499877072.

The previous prime is 20302312312213. The next prime is 20302312312229. The reversal of 20302312312221 is 12221321320302.

It is an interprime number because it is at equal distance from previous prime (20302312312213) and next prime (20302312312229).

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

It is not a de Polignac number, because 20302312312221 - 2³ = 20302312312213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20302312312191 and 20302312312200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302312312229) 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, 63843749251 + ... + 63843749568.

It is an arithmetic number, because the mean of its divisors is an integer number (3447562468140).

Almost surely, 2^{20302312312221} is an apocalyptic number.

It is an amenable number.

20302312312221 is a deficient number, since it is larger than the sum of its proper divisors (7278187432899).

20302312312221 is a wasteful number, since it uses less digits than its factorization.

20302312312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127687498875.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20302312312221 its reverse (12221321320302), we get a palindrome (32523633632523).

The spelling of 20302312312221 in words is "twenty trillion, three hundred two billion, three hundred twelve million, three hundred twelve thousand, two hundred twenty-one".