11221212121010 has 16 divisors (see below), whose sum is σ = 21076363636416. Its totient is φ = 4293333333168.

The previous prime is 11221212120983. The next prime is 11221212121039. The reversal of 11221212121010 is 1012121212211.

It is a self number, because there is not a number n which added to its sum of digits gives 11221212121010.

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, 24393939164 + ... + 24393939623.

It is an arithmetic number, because the mean of its divisors is an integer number (1317272727276).

Almost surely, 2^{11221212121010} is an apocalyptic number.

11221212121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11221212121010 is a deficient number, since it is larger than the sum of its proper divisors (9855151515406).

11221212121010 is a wasteful number, since it uses less digits than its factorization.

11221212121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48787878817.

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

Adding to 11221212121010 its reverse (1012121212211), we get a palindrome (12233333333221).

The spelling of 11221212121010 in words is "eleven trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, ten".