1212311130 has 32 divisors (see below), whose sum is σ = 2913807168. Its totient is φ = 322809600.

The previous prime is 1212311119. The next prime is 1212311137. The reversal of 1212311130 is 311132121.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1212311137) 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, 8511 + ... + 49970.

It is an arithmetic number, because the mean of its divisors is an integer number (91056474).

Almost surely, 2^1212311130 is an apocalyptic number.

1212311130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212311130 is an abundant number, since it is smaller than the sum of its proper divisors (1701496038).

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

1212311130 is a wasteful number, since it uses less digits than its factorization.

1212311130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59182.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1212311130 is about 34818.2585721917. The cubic root of 1212311130 is about 1066.2802475079.

Adding to 1212311130 its reverse (311132121), we get a palindrome (1523443251).

The spelling of 1212311130 in words is "one billion, two hundred twelve million, three hundred eleven thousand, one hundred thirty".