1213220030 has 32 divisors (see below), whose sum is σ = 2459179008. Its totient is φ = 426938400.

The previous prime is 1213220027. The next prime is 1213220039. The reversal of 1213220030 is 300223121.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1213219987 and 1213220014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213220039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174482 + ... + 181301.

It is an arithmetic number, because the mean of its divisors is an integer number (76849344).

Almost surely, 2^1213220030 is an apocalyptic number.

1213220030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213220030 is an abundant number, since it is smaller than the sum of its proper divisors (1245958978).

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

1213220030 is a wasteful number, since it uses less digits than its factorization.

1213220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355832.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1213220030 is about 34831.3081867449. The cubic root of 1213220030 is about 1066.5466532727.

Adding to 1213220030 its reverse (300223121), we get a palindrome (1513443151).

The spelling of 1213220030 in words is "one billion, two hundred thirteen million, two hundred twenty thousand, thirty".