1121220212020 has 96 divisors (see below), whose sum is σ = 2407972613760. Its totient is φ = 438381565440.

The previous prime is 1121220212009. The next prime is 1121220212027. The reversal of 1121220212020 is 202120221211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1121220211985 and 1121220212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121220212027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381495711 + ... + 381498649.

It is an arithmetic number, because the mean of its divisors is an integer number (25083048060).

Almost surely, 2^{1121220212020} is an apocalyptic number.

1121220212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121220212020 is an abundant number, since it is smaller than the sum of its proper divisors (1286752401740).

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

1121220212020 is a wasteful number, since it uses less digits than its factorization.

1121220212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225 (or 4223 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1121220212020 its reverse (202120221211), we get a palindrome (1323340433231).

The spelling of 1121220212020 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, twenty".