1121201020220 has 24 divisors (see below), whose sum is σ = 2356482661008. Its totient is φ = 448106976000.

The previous prime is 1121201020201. The next prime is 1121201020259. The reversal of 1121201020220 is 220201021211.

It is a junction number, because it is equal to n+sod(n) for n = 1121201020195 and 1121201020204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23314886 + ... + 23362925.

It is an arithmetic number, because the mean of its divisors is an integer number (98186777542).

Almost surely, 2^{1121201020220} is an apocalyptic number.

1121201020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121201020220 is an abundant number, since it is smaller than the sum of its proper divisors (1235281640788).

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

1121201020220 is a wasteful number, since it uses less digits than its factorization.

1121201020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46679021 (or 46679019 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1121201020220 its reverse (220201021211), we get a palindrome (1341402041431).

Subtracting from 1121201020220 its reverse (220201021211), we obtain a palindrome (900999999009).

The spelling of 1121201020220 in words is "one trillion, one hundred twenty-one billion, two hundred one million, twenty thousand, two hundred twenty".