121222212010 has 16 divisors (see below), whose sum is σ = 218339971200. Its totient is φ = 48457776016.

The previous prime is 121222211989. The next prime is 121222212019. The reversal of 121222212010 is 10212222121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121222212019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3872230 + ... + 3903409.

It is an arithmetic number, because the mean of its divisors is an integer number (13646248200).

Almost surely, 2^121222212010 is an apocalyptic number.

121222212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222212010 is a deficient number, since it is larger than the sum of its proper divisors (97117759190).

121222212010 is a wasteful number, since it uses less digits than its factorization.

121222212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7777205.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121222212010 its reverse (10212222121), we get a palindrome (131434434131).

The spelling of 121222212010 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, ten".