212212013221123 has 4 divisors (see below), whose sum is σ = 212214047780880. Its totient is φ = 212209978661368.

The previous prime is 212212013221121. The next prime is 212212013221139. The reversal of 212212013221123 is 321122310212212.

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 212212013221123 - 2¹ = 212212013221121 is a prime.

It is a super-2 number, since 2×212212013221123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212212013221121) 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, 1017123415 + ... + 1017332032.

It is an arithmetic number, because the mean of its divisors is an integer number (53053511945220).

Almost surely, 2^{212212013221123} is an apocalyptic number.

212212013221123 is a deficient number, since it is larger than the sum of its proper divisors (2034559757).

212212013221123 is a wasteful number, since it uses less digits than its factorization.

212212013221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034559756.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 212212013221123 its reverse (321122310212212), we get a palindrome (533334323433335).

The spelling of 212212013221123 in words is "two hundred twelve trillion, two hundred twelve billion, thirteen million, two hundred twenty-one thousand, one hundred twenty-three".