1122121220010 has 128 divisors (see below), whose sum is σ = 3180045533184. Its totient is φ = 247981236480.

The previous prime is 1122121219997. The next prime is 1122121220021. The reversal of 1122121220010 is 100221212211.

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 63 ways as a sum of consecutive naturals, for example, 6997084 + ... + 7155656.

It is an arithmetic number, because the mean of its divisors is an integer number (24844105728).

Almost surely, 2^{1122121220010} is an apocalyptic number.

1122121220010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122121220010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1590022766592).

1122121220010 is an abundant number, since it is smaller than the sum of its proper divisors (2057924313174).

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

1122121220010 is a wasteful number, since it uses less digits than its factorization.

1122121220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159708.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1122121220010 its reverse (100221212211), we get a palindrome (1222342432221).

The spelling of 1122121220010 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty thousand, ten".