11211111121202 has 32 divisors (see below), whose sum is σ = 17200279415088. Its totient is φ = 5479078864896.

The previous prime is 11211111121181. The next prime is 11211111121211. The reversal of 11211111121202 is 20212111111211.

It can be written as a sum of positive squares in 8 ways, for example, as 252223923961 + 10958887197241 = 502219^2 + 3310421^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129515528 + ... + 129602060.

Almost surely, 2^{11211111121202} is an apocalyptic number.

11211111121202 is a deficient number, since it is larger than the sum of its proper divisors (5989168293886).

11211111121202 is a wasteful number, since it uses less digits than its factorization.

11211111121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94574.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11211111121202 its reverse (20212111111211), we get a palindrome (31423222232413).

Subtracting 11211111121202 from its reverse (20212111111211), we obtain a palindrome (9000999990009).

The spelling of 11211111121202 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, one hundred twenty-one thousand, two hundred two".