121212223002130 has 24 divisors (see below), whose sum is σ = 236256250044132. Its totient is φ = 44755282338624.

The previous prime is 121212223002121. The next prime is 121212223002191. The reversal of 121212223002130 is 31200322212121.

It can be written as a sum of positive squares in 6 ways, for example, as 23121085616721 + 98091137385409 = 4808439^2 + 9904097^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35861602749 + ... + 35861606128.

Almost surely, 2^{121212223002130} is an apocalyptic number.

121212223002130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121212223002130 is a deficient number, since it is larger than the sum of its proper divisors (115044027042002).

121212223002130 is a wasteful number, since it uses less digits than its factorization.

121212223002130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71723208910 (or 71723208897 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 121212223002130 its reverse (31200322212121), we get a palindrome (152412545214251).

The spelling of 121212223002130 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred twenty-three million, two thousand, one hundred thirty".