2123111112122 has 32 divisors (see below), whose sum is σ = 4275916089984. Its totient is φ = 763556443200.

The previous prime is 2123111112121. The next prime is 2123111112127. The reversal of 2123111112122 is 2212111113212.

It is a junction number, because it is equal to n+sod(n) for n = 2123111112094 and 2123111112103.

It is not an unprimeable number, because it can be changed into a prime (2123111112121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530245529 + ... + 530249532.

It is an arithmetic number, because the mean of its divisors is an integer number (133622377812).

Almost surely, 2^{2123111112122} is an apocalyptic number.

2123111112122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2123111112122 is an abundant number, since it is smaller than the sum of its proper divisors (2152804977862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123111112122 is a wasteful number, since it uses less digits than its factorization.

2123111112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060495094.

The product of its digits is 96, while the sum is 20.

Adding to 2123111112122 its reverse (2212111113212), we get a palindrome (4335222225334).

The spelling of 2123111112122 in words is "two trillion, one hundred twenty-three billion, one hundred eleven million, one hundred twelve thousand, one hundred twenty-two".