121222112010 has 32 divisors (see below), whose sum is σ = 300318008832. Its totient is φ = 31283125440.

The previous prime is 121222112003. The next prime is 121222112047. The reversal of 121222112010 is 10211222121.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 65172249 + ... + 65174108.

It is an arithmetic number, because the mean of its divisors is an integer number (9384937776).

Almost surely, 2^121222112010 is an apocalyptic number.

121222112010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222112010 is an abundant number, since it is smaller than the sum of its proper divisors (179095896822).

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

121222112010 is a wasteful number, since it uses less digits than its factorization.

121222112010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130346398.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121222112010 its reverse (10211222121), we get a palindrome (131433334131).

The spelling of 121222112010 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, ten".