2121000122122 has 48 divisors (see below), whose sum is σ = 4089005789760. Its totient is φ = 818332513152.

The previous prime is 2121000122107. The next prime is 2121000122141. The reversal of 2121000122122 is 2212210001212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2121000122096 and 2121000122105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27637972 + ... + 27714607.

It is an arithmetic number, because the mean of its divisors is an integer number (85187620620).

Almost surely, 2^{2121000122122} is an apocalyptic number.

2121000122122 is a deficient number, since it is larger than the sum of its proper divisors (1968005667638).

2121000122122 is a wasteful number, since it uses less digits than its factorization.

2121000122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55352635 (or 55352628 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2121000122122 its reverse (2212210001212), we get a palindrome (4333210123334).

The spelling of 2121000122122 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two thousand, one hundred twenty-two".