121089771 has 24 divisors (see below), whose sum is σ = 194051520. Its totient is φ = 72140400.

The previous prime is 121089737. The next prime is 121089781. The reversal of 121089771 is 177980121.

It is not a de Polignac number, because 121089771 - 2⁶ = 121089707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121089701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4525 + ... + 16206.

It is an arithmetic number, because the mean of its divisors is an integer number (8085480).

Almost surely, 2^121089771 is an apocalyptic number.

121089771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121089771 is a deficient number, since it is larger than the sum of its proper divisors (72961749).

121089771 is a wasteful number, since it uses less digits than its factorization.

121089771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20807 (or 20804 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 36.

The square root of 121089771 is about 11004.0797434406. The cubic root of 121089771 is about 494.7310323289.

The spelling of 121089771 in words is "one hundred twenty-one million, eighty-nine thousand, seven hundred seventy-one".