2120212100023 has 4 divisors (see below), whose sum is σ = 2124088173880. Its totient is φ = 2116336026168.

The previous prime is 2120212099919. The next prime is 2120212100029. The reversal of 2120212100023 is 3200012120212.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120212100023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120212100029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1938036108 + ... + 1938037201.

It is an arithmetic number, because the mean of its divisors is an integer number (531022043470).

Almost surely, 2^{2120212100023} is an apocalyptic number.

2120212100023 is a deficient number, since it is larger than the sum of its proper divisors (3876073857).

2120212100023 is an equidigital number, since it uses as much as digits as its factorization.

2120212100023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876073856.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2120212100023 its reverse (3200012120212), we get a palindrome (5320224220235).

The spelling of 2120212100023 in words is "two trillion, one hundred twenty billion, two hundred twelve million, one hundred thousand, twenty-three".