11121221011210 has 16 divisors (see below), whose sum is σ = 20020678842600. Its totient is φ = 4447937066176.

The previous prime is 11121221011169. The next prime is 11121221011231. The reversal of 11121221011210 is 1211012212111.

It can be written as a sum of positive squares in 4 ways, for example, as 7811728732809 + 3309492278401 = 2794947^2 + 1819201^2 .

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, 68832565 + ... + 68993944.

Almost surely, 2^{11121221011210} is an apocalyptic number.

11121221011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11121221011210 is a deficient number, since it is larger than the sum of its proper divisors (8899457831390).

11121221011210 is a wasteful number, since it uses less digits than its factorization.

11121221011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137834585.

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

Adding to 11121221011210 its reverse (1211012212111), we get a palindrome (12332233223321).

The spelling of 11121221011210 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty-one million, eleven thousand, two hundred ten".