2121000100022 has 16 divisors (see below), whose sum is σ = 3406497191280. Its totient is φ = 986902887168.

The previous prime is 2121000099991. The next prime is 2121000100031. The reversal of 2121000100022 is 2200010001212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2121000099976 and 2121000100012.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 350459648 + ... + 350465699.

It is an arithmetic number, because the mean of its divisors is an integer number (212906074455).

Almost surely, 2^{2121000100022} is an apocalyptic number.

2121000100022 is a deficient number, since it is larger than the sum of its proper divisors (1285497091258).

2121000100022 is a wasteful number, since it uses less digits than its factorization.

2121000100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700925455.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2121000100022 its reverse (2200010001212), we get a palindrome (4321010101234).

The spelling of 2121000100022 in words is "two trillion, one hundred twenty-one billion, one hundred thousand, twenty-two".