11221121111010 has 32 divisors (see below), whose sum is σ = 27309996173952. Its totient is φ = 2950153906560.

The previous prime is 11221121110981. The next prime is 11221121111023. The reversal of 11221121111010 is 1011112112211.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 2634063859 + ... + 2634068118.

It is an arithmetic number, because the mean of its divisors is an integer number (853437380436).

Almost surely, 2^{11221121111010} is an apocalyptic number.

11221121111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11221121111010 is an abundant number, since it is smaller than the sum of its proper divisors (16088875062942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221121111010 is a wasteful number, since it uses less digits than its factorization.

11221121111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5268132058.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11221121111010 its reverse (1011112112211), we get a palindrome (12232233223221).

The spelling of 11221121111010 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, ten".