121222020 has 48 divisors (see below), whose sum is σ = 340579008. Its totient is φ = 32215680.

The previous prime is 121222007. The next prime is 121222037. The reversal of 121222020 is 20222121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 121221987 and 121222005.

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, 15130 + ... + 21710.

It is an arithmetic number, because the mean of its divisors is an integer number (7095396).

Almost surely, 2^121222020 is an apocalyptic number.

121222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222020 is an abundant number, since it is smaller than the sum of its proper divisors (219356988).

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

121222020 is a wasteful number, since it uses less digits than its factorization.

121222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6900 (or 6898 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 121222020 is about 11010.0871931152. The cubic root of 121222020 is about 494.9110747308.

Adding to 121222020 its reverse (20222121), we get a palindrome (141444141).

It can be divided in two parts, 1212 and 22020, that added together give a palindrome (23232).

The spelling of 121222020 in words is "one hundred twenty-one million, two hundred twenty-two thousand, twenty".