1221102123010 has 192 divisors, whose sum is σ = 3007704389760. Its totient is φ = 351775872000.

The previous prime is 1221102123001. The next prime is 1221102123041. The reversal of 1221102123010 is 103212011221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4053400 + ... + 4344220.

It is an arithmetic number, because the mean of its divisors is an integer number (15665127030).

Almost surely, 2^{1221102123010} is an apocalyptic number.

1221102123010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221102123010 is an abundant number, since it is smaller than the sum of its proper divisors (1786602266750).

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

1221102123010 is a wasteful number, since it uses less digits than its factorization.

1221102123010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290913 (or 290906 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1221102123010 its reverse (103212011221), we get a palindrome (1324314134231).

The spelling of 1221102123010 in words is "one trillion, two hundred twenty-one billion, one hundred two million, one hundred twenty-three thousand, ten".