1120121020 has 48 divisors (see below), whose sum is σ = 2376150336. Its totient is φ = 443520000.

The previous prime is 1120121011. The next prime is 1120121021. The reversal of 1120121020 is 201210211.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1120120988 and 1120121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120121021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270980 + ... + 1271860.

It is an arithmetic number, because the mean of its divisors is an integer number (49503132).

Almost surely, 2^1120121020 is an apocalyptic number.

1120121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120121020 is an abundant number, since it is smaller than the sum of its proper divisors (1256029316).

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

1120121020 is a wasteful number, since it uses less digits than its factorization.

1120121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462 (or 1460 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1120121020 is about 33468.2090946020. The cubic root of 1120121020 is about 1038.5362235252.

Adding to 1120121020 its reverse (201210211), we get a palindrome (1321331231).

It can be divided in two parts, 1 and 120121020, that added together give a palindrome (120121021).

The spelling of 1120121020 in words is "one billion, one hundred twenty million, one hundred twenty-one thousand, twenty".