1302232220 has 24 divisors (see below), whose sum is σ = 2735646144. Its totient is φ = 520710336.

The previous prime is 1302232213. The next prime is 1302232223. The reversal of 1302232220 is 222322031.

It is a super-2 number, since 2×1302232220² = 3391617509612256800, which contains 22 as substring.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302232223) 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, 57122 + ... + 76598.

It is an arithmetic number, because the mean of its divisors is an integer number (113985256).

Almost surely, 2^1302232220 is an apocalyptic number.

1302232220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302232220 is an abundant number, since it is smaller than the sum of its proper divisors (1433413924).

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

1302232220 is a wasteful number, since it uses less digits than its factorization.

1302232220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22829 (or 22827 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1302232220 is about 36086.4547995505. The cubic root of 1302232220 is about 1092.0171999688.

Adding to 1302232220 its reverse (222322031), we get a palindrome (1524554251).

The spelling of 1302232220 in words is "one billion, three hundred two million, two hundred thirty-two thousand, two hundred twenty".