20030212103123 has 4 divisors (see below), whose sum is σ = 20060514996528. Its totient is φ = 19999909209720.

The previous prime is 20030212103101. The next prime is 20030212103183. The reversal of 20030212103123 is 32130121203002.

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 20030212103123 - 2¹⁴ = 20030212086739 is a prime.

It is a super-2 number, since 2×20030212103123² (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 = 20030212103095 and 20030212103104.

It is not an unprimeable number, because it can be changed into a prime (20030212103183) 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, 15151445711 + ... + 15151447032.

It is an arithmetic number, because the mean of its divisors is an integer number (5015128749132).

Almost surely, 2^{20030212103123} is an apocalyptic number.

20030212103123 is a deficient number, since it is larger than the sum of its proper divisors (30302893405).

20030212103123 is an equidigital number, since it uses as much as digits as its factorization.

20030212103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30302893404.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20030212103123 its reverse (32130121203002), we get a palindrome (52160333306125).

The spelling of 20030212103123 in words is "twenty trillion, thirty billion, two hundred twelve million, one hundred three thousand, one hundred twenty-three".