212100012021023 has 16 divisors (see below), whose sum is σ = 248646411611136. Its totient is φ = 177127147700160.

The previous prime is 212100012020993. The next prime is 212100012021031. The reversal of 212100012021023 is 320120210001212.

It is not a de Polignac number, because 212100012021023 - 2⁶ = 212100012020959 is a prime.

It is a super-2 number, since 2×212100012021023² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212100012020992 and 212100012021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212100012021923) 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, 497111411 + ... + 497537892.

It is an arithmetic number, because the mean of its divisors is an integer number (15540400725696).

Almost surely, 2^{212100012021023} is an apocalyptic number.

212100012021023 is a deficient number, since it is larger than the sum of its proper divisors (36546399590113).

212100012021023 is an equidigital number, since it uses as much as digits as its factorization.

212100012021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994650094.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212100012021023 its reverse (320120210001212), we get a palindrome (532220222022235).

The spelling of 212100012021023 in words is "two hundred twelve trillion, one hundred billion, twelve million, twenty-one thousand, twenty-three".