121212001023 has 16 divisors (see below), whose sum is σ = 168735467520. Its totient is φ = 77252129504.

The previous prime is 121212001021. The next prime is 121212001037. The reversal of 121212001023 is 320100212121.

It is a cyclic number.

It is not a de Polignac number, because 121212001023 - 2¹ = 121212001021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121212000993 and 121212001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212001021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356028 + ... + 607601.

It is an arithmetic number, because the mean of its divisors is an integer number (10545966720).

Almost surely, 2^121212001023 is an apocalyptic number.

121212001023 is a deficient number, since it is larger than the sum of its proper divisors (47523466497).

121212001023 is a wasteful number, since it uses less digits than its factorization.

121212001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965478.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121212001023 its reverse (320100212121), we get a palindrome (441312213144).

The spelling of 121212001023 in words is "one hundred twenty-one billion, two hundred twelve million, one thousand, twenty-three".