2121210110122 has 4 divisors (see below), whose sum is σ = 3181815165186. Its totient is φ = 1060605055060.

The previous prime is 2121210110059. The next prime is 2121210110143. The reversal of 2121210110122 is 2210110121212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2119065401401 + 2144708721 = 1455701^2 + 46311^2 .

It is a super-3 number, since 3×2121210110122³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121210110096 and 2121210110105.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 530302527529 + ... + 530302527532.

Almost surely, 2^{2121210110122} is an apocalyptic number.

2121210110122 is a deficient number, since it is larger than the sum of its proper divisors (1060605055064).

2121210110122 is a wasteful number, since it uses less digits than its factorization.

2121210110122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060605055063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2121210110122 its reverse (2210110121212), we get a palindrome (4331320231334).

The spelling of 2121210110122 in words is "two trillion, one hundred twenty-one billion, two hundred ten million, one hundred ten thousand, one hundred twenty-two".