121818794 has 4 divisors (see below), whose sum is σ = 182728194. Its totient is φ = 60909396.

The previous prime is 121818793. The next prime is 121818811. The reversal of 121818794 is 497818121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 113145769 + 8673025 = 10637^2 + 2945^2 .

It is a super-2 number, since 2×121818794² = 29679637143228872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121818791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30454697 + ... + 30454700.

Almost surely, 2^121818794 is an apocalyptic number.

121818794 is a deficient number, since it is larger than the sum of its proper divisors (60909400).

121818794 is an equidigital number, since it uses as much as digits as its factorization.

121818794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60909399.

The product of its digits is 32256, while the sum is 41.

The square root of 121818794 is about 11037.1551588260. The cubic root of 121818794 is about 495.7218919820.

The spelling of 121818794 in words is "one hundred twenty-one million, eight hundred eighteen thousand, seven hundred ninety-four".