121327770 has 32 divisors (see below), whose sum is σ = 291506688. Its totient is φ = 32318528.

The previous prime is 121327757. The next prime is 121327781. The reversal of 121327770 is 77723121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

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, 36727 + ... + 39893.

It is an arithmetic number, because the mean of its divisors is an integer number (9109584).

Almost surely, 2^121327770 is an apocalyptic number.

121327770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121327770 is an abundant number, since it is smaller than the sum of its proper divisors (170178918).

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

121327770 is a wasteful number, since it uses less digits than its factorization.

121327770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4454.

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 121327770 is about 11014.8885604894. Note that the first 3 decimals coincide. The cubic root of 121327770 is about 495.0549474765.

The spelling of 121327770 in words is "one hundred twenty-one million, three hundred twenty-seven thousand, seven hundred seventy".