2121000300123 has 8 divisors (see below), whose sum is σ = 2828516198208. Its totient is φ = 1413742301064.

The previous prime is 2121000300121. The next prime is 2121000300143. The reversal of 2121000300123 is 3210030001212.

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

It is not a de Polignac number, because 2121000300123 - 2¹ = 2121000300121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121000300121) 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, 64455565 + ... + 64488462.

It is an arithmetic number, because the mean of its divisors is an integer number (353564524776).

Almost surely, 2^{2121000300123} is an apocalyptic number.

2121000300123 is a deficient number, since it is larger than the sum of its proper divisors (707515898085).

2121000300123 is a wasteful number, since it uses less digits than its factorization.

2121000300123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128949513.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 2121000300123 its reverse (3210030001212), we get a palindrome (5331030301335).

The spelling of 2121000300123 in words is "two trillion, one hundred twenty-one billion, three hundred thousand, one hundred twenty-three".