2121022203112 has 8 divisors (see below), whose sum is σ = 3976916630850. Its totient is φ = 1060511101552.

The previous prime is 2121022203061. The next prime is 2121022203163. The reversal of 2121022203112 is 2113022201212.

It is an interprime number because it is at equal distance from previous prime (2121022203061) and next prime (2121022203163).

It can be written as a sum of positive squares in only one way, i.e., 1150414985476 + 970607217636 = 1072574^2 + 985194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2121022203112.

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, 132563887687 + ... + 132563887702.

Almost surely, 2^{2121022203112} is an apocalyptic number.

It is an amenable number.

2121022203112 is a deficient number, since it is larger than the sum of its proper divisors (1855894427738).

2121022203112 is a wasteful number, since it uses less digits than its factorization.

2121022203112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265127775395 (or 265127775391 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2121022203112 its reverse (2113022201212), we get a palindrome (4234044404324).

The spelling of 2121022203112 in words is "two trillion, one hundred twenty-one billion, twenty-two million, two hundred three thousand, one hundred twelve".