11222212121002 has 16 divisors (see below), whose sum is σ = 16863866866440. Its totient is φ = 5600928755968.

The previous prime is 11222212120963. The next prime is 11222212121017. The reversal of 11222212121002 is 20012121222211.

It can be written as a sum of positive squares in 4 ways, for example, as 8679746791881 + 2542465329121 = 2946141^2 + 1594511^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2624238 + ... + 5415814.

Almost surely, 2^{11222212121002} is an apocalyptic number.

11222212121002 is a deficient number, since it is larger than the sum of its proper divisors (5641654745438).

11222212121002 is a wasteful number, since it uses less digits than its factorization.

11222212121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795225.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11222212121002 its reverse (20012121222211), we get a palindrome (31234333343213).

The spelling of 11222212121002 in words is "eleven trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, two".