2121020100022 has 4 divisors (see below), whose sum is σ = 3181530150036. Its totient is φ = 1060510050010.

The previous prime is 2121020100019. The next prime is 2121020100047. The reversal of 2121020100022 is 2200010201212.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2121020099975 and 2121020100011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530255025004 + ... + 530255025007.

It is an arithmetic number, because the mean of its divisors is an integer number (795382537509).

Almost surely, 2^{2121020100022} is an apocalyptic number.

2121020100022 is a deficient number, since it is larger than the sum of its proper divisors (1060510050014).

2121020100022 is a wasteful number, since it uses less digits than its factorization.

2121020100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060510050013.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2121020100022 its reverse (2200010201212), we get a palindrome (4321030301234).

The spelling of 2121020100022 in words is "two trillion, one hundred twenty-one billion, twenty million, one hundred thousand, twenty-two".