121212102110010 has 128 divisors (see below), whose sum is σ = 317845524697344. Its totient is φ = 29459364802560.

The previous prime is 121212102110009. The next prime is 121212102110017. The reversal of 121212102110010 is 10011201212121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (121212102110017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11240077 + ... + 19203216.

It is an arithmetic number, because the mean of its divisors is an integer number (2483168161698).

Almost surely, 2^{121212102110010} is an apocalyptic number.

121212102110010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121212102110010 is an abundant number, since it is smaller than the sum of its proper divisors (196633422587334).

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

121212102110010 is a wasteful number, since it uses less digits than its factorization.

121212102110010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30443568.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121212102110010 its reverse (10011201212121), we get a palindrome (131223303322131).

The spelling of 121212102110010 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred two million, one hundred ten thousand, ten".