121771260 has 108 divisors (see below), whose sum is σ = 400071672. Its totient is φ = 29966976.

The previous prime is 121771253. The next prime is 121771267. The reversal of 121771260 is 62177121.

It is an interprime number because it is at equal distance from previous prime (121771253) and next prime (121771267).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121771267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28419 + ... + 32421.

Almost surely, 2^121771260 is an apocalyptic number.

121771260 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 121771260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200035836).

121771260 is an abundant number, since it is smaller than the sum of its proper divisors (278300412).

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

121771260 is a wasteful number, since it uses less digits than its factorization.

121771260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044 (or 4026 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 121771260 is about 11035.0015858630. The cubic root of 121771260 is about 495.6574062838.

The spelling of 121771260 in words is "one hundred twenty-one million, seven hundred seventy-one thousand, two hundred sixty".