121212303194 has 16 divisors (see below), whose sum is σ = 192634291368. Its totient is φ = 57005340672.

The previous prime is 121212303193. The next prime is 121212303227. The reversal of 121212303194 is 491303212121.

It can be written as a sum of positive squares in 4 ways, for example, as 103519845025 + 17692458169 = 321745^2 + 133013^2 .

It is not an unprimeable number, because it can be changed into a prime (121212303193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1061879 + ... + 1170474.

Almost surely, 2^121212303194 is an apocalyptic number.

121212303194 is a deficient number, since it is larger than the sum of its proper divisors (71421988174).

121212303194 is a wasteful number, since it uses less digits than its factorization.

121212303194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233969.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 121212303194 in words is "one hundred twenty-one billion, two hundred twelve million, three hundred three thousand, one hundred ninety-four".