2012220121123 has 4 divisors (see below), whose sum is σ = 2012239693120. Its totient is φ = 2012200549128.

The previous prime is 2012220121103. The next prime is 2012220121151. The reversal of 2012220121123 is 3211210222102.

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 2012220121123 - 2⁹ = 2012220120611 is a prime.

It is a super-2 number, since 2×2012220121123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2012220121123.

It is not an unprimeable number, because it can be changed into a prime (2012220121103) 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, 9630963 + ... + 9837676.

It is an arithmetic number, because the mean of its divisors is an integer number (503059923280).

Almost surely, 2^{2012220121123} is an apocalyptic number.

2012220121123 is a deficient number, since it is larger than the sum of its proper divisors (19571997).

2012220121123 is a wasteful number, since it uses less digits than its factorization.

2012220121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19571996.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2012220121123 its reverse (3211210222102), we get a palindrome (5223430343225).

The spelling of 2012220121123 in words is "two trillion, twelve billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twenty-three".