1221102110300 has 144 divisors (see below), whose sum is σ = 2999056923072. Its totient is φ = 428996198400.

The previous prime is 1221102110297. The next prime is 1221102110329. The reversal of 1221102110300 is 30112011221.

It is a super-2 number, since 2×1221102110300² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1222244 + ... + 1983956.

It is an arithmetic number, because the mean of its divisors is an integer number (20826784188).

Almost surely, 2^{1221102110300} is an apocalyptic number.

1221102110300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1221102110300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499528461536).

1221102110300 is an abundant number, since it is smaller than the sum of its proper divisors (1777954812772).

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

1221102110300 is a wasteful number, since it uses less digits than its factorization.

1221102110300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761808 (or 761801 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1221102110300 its reverse (30112011221), we get a palindrome (1251214121521).

The spelling of 1221102110300 in words is "one trillion, two hundred twenty-one billion, one hundred two million, one hundred ten thousand, three hundred".