121332620 has 48 divisors (see below), whose sum is σ = 264182688. Its totient is φ = 46771200.

The previous prime is 121332619. The next prime is 121332649. The reversal of 121332620 is 26233121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121332592 and 121332601.

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, 82895 + ... + 84345.

It is an arithmetic number, because the mean of its divisors is an integer number (5503806).

Almost surely, 2^121332620 is an apocalyptic number.

121332620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121332620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132091344).

121332620 is an abundant number, since it is smaller than the sum of its proper divisors (142850068).

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

121332620 is a wasteful number, since it uses less digits than its factorization.

121332620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 121332620 is about 11015.1087148516. The cubic root of 121332620 is about 495.0615438902.

Adding to 121332620 its reverse (26233121), we get a palindrome (147565741).

It can be divided in two parts, 1213 and 32620, that added together give a palindrome (33833).

The spelling of 121332620 in words is "one hundred twenty-one million, three hundred thirty-two thousand, six hundred twenty".