2102212122122 has 16 divisors (see below), whose sum is σ = 3720043571712. Its totient is φ = 871885211760.

The previous prime is 2102212122121. The next prime is 2102212122151. The reversal of 2102212122122 is 2212212122012.

It is a junction number, because it is equal to n+sod(n) for n = 2102212122094 and 2102212122103.

It is not an unprimeable number, because it can be changed into a prime (2102212122121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2421902933 + ... + 2421903800.

It is an arithmetic number, because the mean of its divisors is an integer number (232502723232).

Almost surely, 2^{2102212122122} is an apocalyptic number.

2102212122122 is a deficient number, since it is larger than the sum of its proper divisors (1617831449590).

2102212122122 is a wasteful number, since it uses less digits than its factorization.

2102212122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843806773.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2102212122122 its reverse (2212212122012), we get a palindrome (4314424244134).

The spelling of 2102212122122 in words is "two trillion, one hundred two billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twenty-two".