1121001102220 has 48 divisors (see below), whose sum is σ = 2359917876960. Its totient is φ = 447293274624.

The previous prime is 1121001102157. The next prime is 1121001102307. The reversal of 1121001102220 is 222011001211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121001102220.

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, 36718402 + ... + 36748918.

It is an arithmetic number, because the mean of its divisors is an integer number (49164955770).

Almost surely, 2^{1121001102220} is an apocalyptic number.

1121001102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121001102220 is an abundant number, since it is smaller than the sum of its proper divisors (1238916774740).

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

1121001102220 is a wasteful number, since it uses less digits than its factorization.

1121001102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35002 (or 35000 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1121001102220 its reverse (222011001211), we get a palindrome (1343012103431).

It can be divided in two parts, 1121001 and 102220, that added together give a palindrome (1223221).

The spelling of 1121001102220 in words is "one trillion, one hundred twenty-one billion, one million, one hundred two thousand, two hundred twenty".