11101222121210 has 16 divisors (see below), whose sum is σ = 21519292112136. Its totient is φ = 4098912783168.

The previous prime is 11101222121203. The next prime is 11101222121261. The reversal of 11101222121210 is 1212122210111.

It can be written as a sum of positive squares in 4 ways, for example, as 9790309328809 + 1310912792401 = 3128947^2 + 1144951^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 42697008029 + ... + 42697008288.

Almost surely, 2^{11101222121210} is an apocalyptic number.

11101222121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11101222121210 is a deficient number, since it is larger than the sum of its proper divisors (10418069990926).

11101222121210 is a wasteful number, since it uses less digits than its factorization.

11101222121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85394016337.

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

Adding to 11101222121210 its reverse (1212122210111), we get a palindrome (12313344331321).

The spelling of 11101222121210 in words is "eleven trillion, one hundred one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred ten".