1212210100023 has 16 divisors (see below), whose sum is σ = 1741363340640. Its totient is φ = 745652317824.

The previous prime is 1212210100021. The next prime is 1212210100097. The reversal of 1212210100023 is 3200010122121.

It is not a de Polignac number, because 1212210100023 - 2¹ = 1212210100021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212210099975 and 1212210100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210100021) 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 15 ways as a sum of consecutive naturals, for example, 6640636 + ... + 6820737.

It is an arithmetic number, because the mean of its divisors is an integer number (108835208790).

Almost surely, 2^{1212210100023} is an apocalyptic number.

1212210100023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1212210100023 is a deficient number, since it is larger than the sum of its proper divisors (529153240617).

1212210100023 is a wasteful number, since it uses less digits than its factorization.

1212210100023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13463698.

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

Adding to 1212210100023 its reverse (3200010122121), we get a palindrome (4412220222144).

The spelling of 1212210100023 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred thousand, twenty-three".