212111100020123 has 2 divisors, whose sum is σ = 212111100020124. Its totient is φ = 212111100020122.

The previous prime is 212111100020101. The next prime is 212111100020221. The reversal of 212111100020123 is 321020001111212.

It is a happy number.

212111100020123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212111100020123 - 2⁴² = 207713053509019 is a prime.

It is a super-2 number, since 2×212111100020123² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212111100029123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055550010061 + 106055550010062.

It is an arithmetic number, because the mean of its divisors is an integer number (106055550010062).

Almost surely, 2^{212111100020123} is an apocalyptic number.

212111100020123 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111100020123 is an equidigital number, since it uses as much as digits as its factorization.

212111100020123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 212111100020123 its reverse (321020001111212), we get a palindrome (533131101131335).

The spelling of 212111100020123 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred million, twenty thousand, one hundred twenty-three".