121030212220 has 48 divisors (see below), whose sum is σ = 265261485888. Its totient is φ = 46298926080.

The previous prime is 121030212217. The next prime is 121030212263. The reversal of 121030212220 is 22212030121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121030212194 and 121030212203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2960962 + ... + 3001558.

It is an arithmetic number, because the mean of its divisors is an integer number (5526280956).

Almost surely, 2^121030212220 is an apocalyptic number.

121030212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121030212220 is an abundant number, since it is smaller than the sum of its proper divisors (144231273668).

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

121030212220 is a wasteful number, since it uses less digits than its factorization.

121030212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47110 (or 47108 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 121030212220 its reverse (22212030121), we get a palindrome (143242242341).

The spelling of 121030212220 in words is "one hundred twenty-one billion, thirty million, two hundred twelve thousand, two hundred twenty".