121022020 has 48 divisors (see below), whose sum is σ = 305746560. Its totient is φ = 39308544.

The previous prime is 121022009. The next prime is 121022023. The reversal of 121022020 is 20220121.

121022020 is nontrivially palindromic in base 15.

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 = 121021988 and 121022006.

It is not an unprimeable number, because it can be changed into a prime (121022023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20089 + ... + 25408.

It is an arithmetic number, because the mean of its divisors is an integer number (6369720).

Almost surely, 2^121022020 is an apocalyptic number.

121022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022020 is an abundant number, since it is smaller than the sum of its proper divisors (184724540).

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

121022020 is a wasteful number, since it uses less digits than its factorization.

121022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45532 (or 45530 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 121022020 is about 11001.0008635578. Note that the first 3 decimals coincide. The cubic root of 121022020 is about 494.6387460437.

Adding to 121022020 its reverse (20220121), we get a palindrome (141242141).

The spelling of 121022020 in words is "one hundred twenty-one million, twenty-two thousand, twenty".