1122211221012 has 96 divisors (see below), whose sum is σ = 3325477344000. Its totient is φ = 320592525696.

The previous prime is 1122211220993. The next prime is 1122211221049. The reversal of 1122211221012 is 2101221122211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6394614 + ... + 6567762.

It is an arithmetic number, because the mean of its divisors is an integer number (34640389000).

Almost surely, 2^{1122211221012} is an apocalyptic number.

1122211221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122211221012 is an abundant number, since it is smaller than the sum of its proper divisors (2203266122988).

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

1122211221012 is a wasteful number, since it uses less digits than its factorization.

1122211221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181742 (or 181734 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1122211221012 its reverse (2101221122211), we get a palindrome (3223432343223).

The spelling of 1122211221012 in words is "one trillion, one hundred twenty-two billion, two hundred eleven million, two hundred twenty-one thousand, twelve".