122121121010 has 128 divisors (see below), whose sum is σ = 261734989824. Its totient is φ = 40159929600.

The previous prime is 122121120997. The next prime is 122121121099. The reversal of 122121121010 is 10121121221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38607689 + ... + 38610851.

It is an arithmetic number, because the mean of its divisors is an integer number (2044804608).

Almost surely, 2^122121121010 is an apocalyptic number.

122121121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122121121010 is an abundant number, since it is smaller than the sum of its proper divisors (139613868814).

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

122121121010 is a wasteful number, since it uses less digits than its factorization.

122121121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3448.

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

Adding to 122121121010 its reverse (10121121221), we get a palindrome (132242242231).

The spelling of 122121121010 in words is "one hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-one thousand, ten".