121202112220 has 48 divisors (see below), whose sum is σ = 300915599040. Its totient is φ = 40122077184.

The previous prime is 121202112209. The next prime is 121202112223. The reversal of 121202112220 is 22211202121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121202112194 and 121202112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202112223) 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, 14922309 + ... + 14930428.

It is an arithmetic number, because the mean of its divisors is an integer number (6269074980).

Almost surely, 2^121202112220 is an apocalyptic number.

121202112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202112220 is an abundant number, since it is smaller than the sum of its proper divisors (179713486820).

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

121202112220 is a wasteful number, since it uses less digits than its factorization.

121202112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29852782 (or 29852780 counting only the distinct ones).

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

Adding to 121202112220 its reverse (22211202121), we get a palindrome (143413314341).

The spelling of 121202112220 in words is "one hundred twenty-one billion, two hundred two million, one hundred twelve thousand, two hundred twenty".