20302111123 has 8 divisors (see below), whose sum is σ = 23216686592. Its totient is φ = 17391104136.

The previous prime is 20302111033. The next prime is 20302111133. The reversal of 20302111123 is 32111120302.

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

It is not a de Polignac number, because 20302111123 - 2²¹ = 20300013971 is a prime.

It is a super-2 number, since 2×20302111123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20302111097 and 20302111106.

It is not an unprimeable number, because it can be changed into a prime (20302111133) 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, 879915 + ... + 902692.

It is an arithmetic number, because the mean of its divisors is an integer number (2902085824).

Almost surely, 2^20302111123 is an apocalyptic number.

20302111123 is a deficient number, since it is larger than the sum of its proper divisors (2914575469).

20302111123 is a wasteful number, since it uses less digits than its factorization.

20302111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784241.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20302111123 its reverse (32111120302), we get a palindrome (52413231425).

The spelling of 20302111123 in words is "twenty billion, three hundred two million, one hundred eleven thousand, one hundred twenty-three".