1121442220644 has 24 divisors (see below), whose sum is σ = 2680520431008. Its totient is φ = 364696656960.

The previous prime is 1121442220643. The next prime is 1121442220741. The reversal of 1121442220644 is 4460222441211.

It is a super-3 number, since 3×1121442220644³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121442220643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139676562 + ... + 1139677545.

It is an arithmetic number, because the mean of its divisors is an integer number (111688351292).

Almost surely, 2^{1121442220644} is an apocalyptic number.

It is an amenable number.

1121442220644 is an abundant number, since it is smaller than the sum of its proper divisors (1559078210364).

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

1121442220644 is a wasteful number, since it uses less digits than its factorization.

1121442220644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279354155 (or 2279354153 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

Adding to 1121442220644 its reverse (4460222441211), we get a palindrome (5581664661855).

The spelling of 1121442220644 in words is "one trillion, one hundred twenty-one billion, four hundred forty-two million, two hundred twenty thousand, six hundred forty-four".