1121221201120 has 48 divisors (see below), whose sum is σ = 2649414337920. Its totient is φ = 448398872064.

The previous prime is 1121221201109. The next prime is 1121221201129. The reversal of 1121221201120 is 211021221211.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1121221201094 and 1121221201103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121221201129) 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, 106126 + ... + 1501234.

It is an arithmetic number, because the mean of its divisors is an integer number (55196132040).

Almost surely, 2^{1121221201120} is an apocalyptic number.

1121221201120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121221201120 is an abundant number, since it is smaller than the sum of its proper divisors (1528193136800).

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

1121221201120 is a wasteful number, since it uses less digits than its factorization.

1121221201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400147 (or 1400139 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1121221201120 its reverse (211021221211), we get a palindrome (1332242422331).

The spelling of 1121221201120 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, one hundred twenty".