20301220121123 has 4 divisors (see below), whose sum is σ = 20313932220480. Its totient is φ = 20288508021768.

The previous prime is 20301220121099. The next prime is 20301220121251. The reversal of 20301220121123 is 32112102210302.

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 20301220121123 - 2¹² = 20301220117027 is a prime.

It is a super-2 number, since 2×20301220121123² (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 = 20301220121095 and 20301220121104.

It is not an unprimeable number, because it can be changed into a prime (20301220123123) 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, 6356047283 + ... + 6356050476.

It is an arithmetic number, because the mean of its divisors is an integer number (5078483055120).

Almost surely, 2^{20301220121123} is an apocalyptic number.

20301220121123 is a deficient number, since it is larger than the sum of its proper divisors (12712099357).

20301220121123 is a wasteful number, since it uses less digits than its factorization.

20301220121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12712099356.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20301220121123 its reverse (32112102210302), we get a palindrome (52413322331425).

The spelling of 20301220121123 in words is "twenty trillion, three hundred one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twenty-three".