1212121200023 has 8 divisors (see below), whose sum is σ = 1217054981376. Its totient is φ = 1207192001400.

The previous prime is 1212121199911. The next prime is 1212121200061. The reversal of 1212121200023 is 3200021212121.

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 1212121200023 - 2²⁶ = 1212054091159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212121199974 and 1212121200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212121200083) 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, 615113 + ... + 1674098.

It is an arithmetic number, because the mean of its divisors is an integer number (152131872672).

Almost surely, 2^{1212121200023} is an apocalyptic number.

1212121200023 is a deficient number, since it is larger than the sum of its proper divisors (4933781353).

1212121200023 is a wasteful number, since it uses less digits than its factorization.

1212121200023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291365.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1212121200023 its reverse (3200021212121), we get a palindrome (4412142412144).

The spelling of 1212121200023 in words is "one trillion, two hundred twelve billion, one hundred twenty-one million, two hundred thousand, twenty-three".