1202222220 has 24 divisors (see below), whose sum is σ = 3366222384. Its totient is φ = 320592576.

The previous prime is 1202222159. The next prime is 1202222227. The reversal of 1202222220 is 222222021.

It is a super-3 number, since 3×1202222220³ (a number of 28 digits) contains 333 as substring.

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 1202222220.

It is not an unprimeable number, because it can be changed into a prime (1202222227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10018459 + ... + 10018578.

It is an arithmetic number, because the mean of its divisors is an integer number (140259266).

Almost surely, 2^1202222220 is an apocalyptic number.

1202222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202222220 is an abundant number, since it is smaller than the sum of its proper divisors (2164000164).

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

1202222220 is a wasteful number, since it uses less digits than its factorization.

1202222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20037049 (or 20037047 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1202222220 is about 34673.0762984769. The cubic root of 1202222220 is about 1063.3141261084.

Adding to 1202222220 its reverse (222222021), we get a palindrome (1424444241).

The spelling of 1202222220 in words is "one billion, two hundred two million, two hundred twenty-two thousand, two hundred twenty".