1212201121023 has 6 divisors (see below), whose sum is σ = 1750957174824. Its totient is φ = 808134080676.

The previous prime is 1212201120967. The next prime is 1212201121031. The reversal of 1212201121023 is 3201211022121.

It is not a de Polignac number, because 1212201121023 - 2⁹ = 1212201120511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212201120987 and 1212201121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67344506715 + ... + 67344506732.

It is an arithmetic number, because the mean of its divisors is an integer number (291826195804).

Almost surely, 2^{1212201121023} is an apocalyptic number.

1212201121023 is a deficient number, since it is larger than the sum of its proper divisors (538756053801).

1212201121023 is a wasteful number, since it uses less digits than its factorization.

1212201121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134689013453 (or 134689013450 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1212201121023 its reverse (3201211022121), we get a palindrome (4413412143144).

The spelling of 1212201121023 in words is "one trillion, two hundred twelve billion, two hundred one million, one hundred twenty-one thousand, twenty-three".