121701078 has 24 divisors (see below), whose sum is σ = 267623928. Its totient is φ = 39961152.

The previous prime is 121701067. The next prime is 121701101. The reversal of 121701078 is 870107121.

It is a super-2 number, since 2×121701078² = 29622304772724168, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49251 + ... + 51662.

It is an arithmetic number, because the mean of its divisors is an integer number (11150997).

Almost surely, 2^121701078 is an apocalyptic number.

121701078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

121701078 is an abundant number, since it is smaller than the sum of its proper divisors (145922850).

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

121701078 is a wasteful number, since it uses less digits than its factorization.

121701078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100988 (or 100985 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 121701078 is about 11031.8211551856. The cubic root of 121701078 is about 495.5621651102.

Adding to 121701078 its reverse (870107121), we get a palindrome (991808199).

It can be divided in two parts, 12 and 1701078, that added together give a triangular number (1701090 = T₁₈₄₄).

The spelling of 121701078 in words is "one hundred twenty-one million, seven hundred one thousand, seventy-eight".