2121130200023 has 4 divisors (see below), whose sum is σ = 2121142006848. Its totient is φ = 2121118393200.

The previous prime is 2121130200017. The next prime is 2121130200131. The reversal of 2121130200023 is 3200020311212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121130200023 is a prime.

It is a super-2 number, since 2×2121130200023² (a number of 25 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 = 2121130199974 and 2121130200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121130200523) 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, 5629703 + ... + 5994648.

It is an arithmetic number, because the mean of its divisors is an integer number (530285501712).

Almost surely, 2^{2121130200023} is an apocalyptic number.

2121130200023 is a deficient number, since it is larger than the sum of its proper divisors (11806825).

2121130200023 is a wasteful number, since it uses less digits than its factorization.

2121130200023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11806824.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2121130200023 its reverse (3200020311212), we get a palindrome (5321150511235).

The spelling of 2121130200023 in words is "two trillion, one hundred twenty-one billion, one hundred thirty million, two hundred thousand, twenty-three".