1202321131220 has 192 divisors, whose sum is σ = 2922361085952. Its totient is φ = 411421248000.

The previous prime is 1202321131211. The next prime is 1202321131321. The reversal of 1202321131220 is 221311232021.

It is a super-2 number, since 2×1202321131220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1202321131192 and 1202321131201.

It is a congruent number.

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, 66560990 + ... + 66579050.

It is an arithmetic number, because the mean of its divisors is an integer number (15220630656).

Almost surely, 2^{1202321131220} is an apocalyptic number.

1202321131220 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 1202321131220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1461180542976).

1202321131220 is an abundant number, since it is smaller than the sum of its proper divisors (1720039954732).

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

1202321131220 is a wasteful number, since it uses less digits than its factorization.

1202321131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18382 (or 18380 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1202321131220 its reverse (221311232021), we get a palindrome (1423632363241).

The spelling of 1202321131220 in words is "one trillion, two hundred two billion, three hundred twenty-one million, one hundred thirty-one thousand, two hundred twenty".