121212112010 has 64 divisors (see below), whose sum is σ = 239737688064. Its totient is φ = 43759060800.

The previous prime is 121212112001. The next prime is 121212112019. The reversal of 121212112010 is 10211212121.

It is an interprime number because it is at equal distance from previous prime (121212112001) and next prime (121212112019).

It is not an unprimeable number, because it can be changed into a prime (121212112019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16731449 + ... + 16738691.

It is an arithmetic number, because the mean of its divisors is an integer number (3745901376).

Almost surely, 2^121212112010 is an apocalyptic number.

121212112010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121212112010 is a deficient number, since it is larger than the sum of its proper divisors (118525576054).

121212112010 is a wasteful number, since it uses less digits than its factorization.

121212112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8339.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121212112010 its reverse (10211212121), we get a palindrome (131423324131).

The spelling of 121212112010 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, ten".