20302210981 has 8 divisors (see below), whose sum is σ = 21921613280. Its totient is φ = 18691050672.

The previous prime is 20302210937. The next prime is 20302210987. The reversal of 20302210981 is 18901220302.

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 20302210981 - 2⁷ = 20302210853 is a prime.

It is a super-2 number, since 2×20302210981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302210987) 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, 2055375 + ... + 2065228.

It is an arithmetic number, because the mean of its divisors is an integer number (2740201660).

Almost surely, 2^20302210981 is an apocalyptic number.

It is an amenable number.

20302210981 is a deficient number, since it is larger than the sum of its proper divisors (1619402299).

20302210981 is a wasteful number, since it uses less digits than its factorization.

20302210981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4120995.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 20302210981 in words is "twenty billion, three hundred two million, two hundred ten thousand, nine hundred eighty-one".