121133003220 has 72 divisors (see below), whose sum is σ = 371565328680. Its totient is φ = 31939184640.

The previous prime is 121133003183. The next prime is 121133003221. The reversal of 121133003220 is 22300331121.

121133003220 is a `hidden beast` number, since 1 + 2 + 11 + 330 + 0 + 322 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1585791684 + 119547211536 = 39822^2 + 345756^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121133003193 and 121133003202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121133003221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3764661 + ... + 3796700.

It is an arithmetic number, because the mean of its divisors is an integer number (5160629565).

Almost surely, 2^121133003220 is an apocalyptic number.

121133003220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121133003220 is an abundant number, since it is smaller than the sum of its proper divisors (250432325460).

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

121133003220 is a wasteful number, since it uses less digits than its factorization.

121133003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7561465 (or 7561460 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 121133003220 its reverse (22300331121), we get a palindrome (143433334341).

The spelling of 121133003220 in words is "one hundred twenty-one billion, one hundred thirty-three million, three thousand, two hundred twenty".