212023122121 has 8 divisors (see below), whose sum is σ = 213442726464. Its totient is φ = 210608165520.

The previous prime is 212023122071. The next prime is 212023122127. The reversal of 212023122121 is 121221320212.

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

It is a cyclic number.

It is not a de Polignac number, because 212023122121 - 2⁷ = 212023121993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212023122127) 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, 1070370 + ... + 1252891.

It is an arithmetic number, because the mean of its divisors is an integer number (26680340808).

Almost surely, 2^212023122121 is an apocalyptic number.

It is an amenable number.

212023122121 is a deficient number, since it is larger than the sum of its proper divisors (1419604343).

212023122121 is a wasteful number, since it uses less digits than its factorization.

212023122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323871.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212023122121 its reverse (121221320212), we get a palindrome (333244442333).

The spelling of 212023122121 in words is "two hundred twelve billion, twenty-three million, one hundred twenty-two thousand, one hundred twenty-one".