1202221112220 has 384 divisors, whose sum is σ = 4135606272000. Its totient is φ = 288581356800.

The previous prime is 1202221112161. The next prime is 1202221112221. The reversal of 1202221112220 is 222111222021.

It is a happy number.

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 = 1202221112193 and 1202221112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202221112221) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 35616111 + ... + 35649849.

It is an arithmetic number, because the mean of its divisors is an integer number (10769808000).

Almost surely, 2^{1202221112220} is an apocalyptic number.

1202221112220 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 1202221112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2067803136000).

1202221112220 is an abundant number, since it is smaller than the sum of its proper divisors (2933385159780).

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

1202221112220 is a wasteful number, since it uses less digits than its factorization.

1202221112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33950 (or 33942 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1202221112220 its reverse (222111222021), we get a palindrome (1424332334241).

The spelling of 1202221112220 in words is "one trillion, two hundred two billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twenty".