121202220 has 24 divisors (see below), whose sum is σ = 339366384. Its totient is φ = 32320576.

The previous prime is 121202209. The next prime is 121202239. The reversal of 121202220 is 22202121.

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 = 121202196 and 121202205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009959 + ... + 1010078.

It is an arithmetic number, because the mean of its divisors is an integer number (14140266).

Almost surely, 2^121202220 is an apocalyptic number.

121202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202220 is an abundant number, since it is smaller than the sum of its proper divisors (218164164).

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

121202220 is a wasteful number, since it uses less digits than its factorization.

121202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020049 (or 2020047 counting only the distinct ones).

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

The square root of 121202220 is about 11009.1879809548. The cubic root of 121202220 is about 494.8841275561.

Adding to 121202220 its reverse (22202121), we get a palindrome (143404341).

Subtracting from 121202220 its reverse (22202121), we obtain a palindrome (99000099).

The spelling of 121202220 in words is "one hundred twenty-one million, two hundred two thousand, two hundred twenty".