1302221201220 has 192 divisors, whose sum is σ = 4093420262400. Its totient is φ = 343656691200.

The previous prime is 1302221201191. The next prime is 1302221201263. The reversal of 1302221201220 is 221021222031.

1302221201220 is a `hidden beast` number, since 1 + 302 + 22 + 120 + 1 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1302221201193 and 1302221201202.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 150907866 + ... + 150916494.

It is an arithmetic number, because the mean of its divisors is an integer number (21319897200).

Almost surely, 2^{1302221201220} is an apocalyptic number.

1302221201220 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 1302221201220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2046710131200).

1302221201220 is an abundant number, since it is smaller than the sum of its proper divisors (2791199061180).

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

1302221201220 is a wasteful number, since it uses less digits than its factorization.

1302221201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11515 (or 11507 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1302221201220 its reverse (221021222031), we get a palindrome (1523242423251).

The spelling of 1302221201220 in words is "one trillion, three hundred two billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty".