1202213220 has 192 divisors, whose sum is σ = 3982970880. Its totient is φ = 268088832.

The previous prime is 1202213209. The next prime is 1202213237. The reversal of 1202213220 is 223122021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1202213220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 339097 + ... + 342623.

It is an arithmetic number, because the mean of its divisors is an integer number (20744640).

Almost surely, 2^1202213220 is an apocalyptic number.

1202213220 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 1202213220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1991485440).

1202213220 is an abundant number, since it is smaller than the sum of its proper divisors (2780757660).

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

1202213220 is a wasteful number, since it uses less digits than its factorization.

1202213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3594 (or 3592 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1202213220 is about 34672.9465145378. The cubic root of 1202213220 is about 1063.3114727301.

Adding to 1202213220 its reverse (223122021), we get a palindrome (1425335241).

The spelling of 1202213220 in words is "one billion, two hundred two million, two hundred thirteen thousand, two hundred twenty".