1220102010000 has 300 divisors, whose sum is σ = 4382205817132. Its totient is φ = 316566144000.

The previous prime is 1220102009981. The next prime is 1220102010019. The reversal of 1220102010000 is 102010221.

It is an interprime number because it is at equal distance from previous prime (1220102009981) and next prime (1220102010019).

It can be written as a sum of positive squares in 10 ways, for example, as 942545839104 + 277556170896 = 970848^2 + 526836^2 .

It is a tau number, because it is divible by the number of its divisors (300).

It is a Harshad number since it is a multiple of its sum of digits (9).

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 59 ways as a sum of consecutive naturals, for example, 3146802 + ... + 3513198.

Almost surely, 2^{1220102010000} is an apocalyptic number.

1220102010000 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 1220102010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2191102908566).

1220102010000 is an abundant number, since it is smaller than the sum of its proper divisors (3162103807132).

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

1220102010000 is a wasteful number, since it uses less digits than its factorization.

1220102010000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366468 (or 366444 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1220102010000 its reverse (102010221), we get a palindrome (1220204020221).

The spelling of 1220102010000 in words is "one trillion, two hundred twenty billion, one hundred two million, ten thousand".