1121200221020 has 48 divisors (see below), whose sum is σ = 2570255065728. Its totient is φ = 407441348160.

The previous prime is 1121200220983. The next prime is 1121200221041. The reversal of 1121200221020 is 201220021211.

It is a junction number, because it is equal to n+sod(n) for n = 1121200220986 and 1121200221004.

It is a congruent number.

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, 1338074 + ... + 2008193.

It is an arithmetic number, because the mean of its divisors is an integer number (53546980536).

Almost surely, 2^{1121200221020} is an apocalyptic number.

1121200221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121200221020 is an abundant number, since it is smaller than the sum of its proper divisors (1449054844708).

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

1121200221020 is a wasteful number, since it uses less digits than its factorization.

1121200221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347810 (or 3347808 counting only the distinct ones).

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

Adding to 1121200221020 its reverse (201220021211), we get a palindrome (1322420242231).

The spelling of 1121200221020 in words is "one trillion, one hundred twenty-one billion, two hundred million, two hundred twenty-one thousand, twenty".