11112221121002 has 8 divisors (see below), whose sum is σ = 16669205661636. Its totient is φ = 5555819233792.

The previous prime is 11112221120983. The next prime is 11112221121019. The reversal of 11112221121002 is 20012112221111.

It can be written as a sum of positive squares in 2 ways, for example, as 10105411567801 + 1006809553201 = 3178901^2 + 1003399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145615673 + ... + 145691964.

Almost surely, 2^{11112221121002} is an apocalyptic number.

11112221121002 is a deficient number, since it is larger than the sum of its proper divisors (5556984540634).

11112221121002 is a wasteful number, since it uses less digits than its factorization.

11112221121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291326712.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11112221121002 its reverse (20012112221111), we get a palindrome (31124333342113).

The spelling of 11112221121002 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, two".