20300000021123 has 4 divisors (see below), whose sum is σ = 20300239298160. Its totient is φ = 20299760744088.

The previous prime is 20300000021111. The next prime is 20300000021209. The reversal of 20300000021123 is 32112000000302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20300000021123 - 2²² = 20299995826819 is a prime.

It is a super-2 number, since 2×20300000021123² (a number of 27 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 = 20300000021098 and 20300000021107.

It is not an unprimeable number, because it can be changed into a prime (20300000027123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119511215 + ... + 119680952.

It is an arithmetic number, because the mean of its divisors is an integer number (5075059824540).

Almost surely, 2^{20300000021123} is an apocalyptic number.

20300000021123 is a deficient number, since it is larger than the sum of its proper divisors (239277037).

20300000021123 is an equidigital number, since it uses as much as digits as its factorization.

20300000021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239277036.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20300000021123 its reverse (32112000000302), we get a palindrome (52412000021425).

The spelling of 20300000021123 in words is "twenty trillion, three hundred billion, twenty-one thousand, one hundred twenty-three".