2021210232123 has 8 divisors (see below), whose sum is σ = 2695002376528. Its totient is φ = 1347445787904.

The previous prime is 2021210232121. The next prime is 2021210232137. The reversal of 2021210232123 is 3212320121202.

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

It is not a de Polignac number, because 2021210232123 - 2¹ = 2021210232121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021210232123.

It is not an unprimeable number, because it can be changed into a prime (2021210232121) 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, 6754186 + ... + 7047087.

It is an arithmetic number, because the mean of its divisors is an integer number (336875297066).

Almost surely, 2^{2021210232123} is an apocalyptic number.

2021210232123 is a deficient number, since it is larger than the sum of its proper divisors (673792144405).

2021210232123 is a wasteful number, since it uses less digits than its factorization.

2021210232123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13850093.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2021210232123 its reverse (3212320121202), we get a palindrome (5233530353325).

The spelling of 2021210232123 in words is "two trillion, twenty-one billion, two hundred ten million, two hundred thirty-two thousand, one hundred twenty-three".