1212100101023 has 4 divisors (see below), whose sum is σ = 1385257258320. Its totient is φ = 1038942943728.

The previous prime is 1212100101019. The next prime is 1212100101089. The reversal of 1212100101023 is 3201010012121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212100101023 - 2² = 1212100101019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212100100989 and 1212100101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212100101623) 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 3 ways as a sum of consecutive naturals, for example, 86578578638 + ... + 86578578651.

It is an arithmetic number, because the mean of its divisors is an integer number (346314314580).

Almost surely, 2^{1212100101023} is an apocalyptic number.

1212100101023 is a deficient number, since it is larger than the sum of its proper divisors (173157157297).

1212100101023 is an equidigital number, since it uses as much as digits as its factorization.

1212100101023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173157157296.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1212100101023 its reverse (3201010012121), we get a palindrome (4413110113144).

The spelling of 1212100101023 in words is "one trillion, two hundred twelve billion, one hundred million, one hundred one thousand, twenty-three".