1302031111212 has 144 divisors (see below), whose sum is σ = 3628351286560. Its totient is φ = 391145739264.

The previous prime is 1302031111193. The next prime is 1302031111219. The reversal of 1302031111212 is 2121111302031.

1302031111212 is a `hidden beast` number, since 130 + 2 + 0 + 311 + 11 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1302031111219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53859864 + ... + 53884032.

Almost surely, 2^{1302031111212} is an apocalyptic number.

1302031111212 is a gapful number since it is divisible by the number (12) 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 1302031111212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814175643280).

1302031111212 is an abundant number, since it is smaller than the sum of its proper divisors (2326320175348).

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

1302031111212 is a wasteful number, since it uses less digits than its factorization.

1302031111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26912 (or 26907 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1302031111212 its reverse (2121111302031), we get a palindrome (3423142413243).

The spelling of 1302031111212 in words is "one trillion, three hundred two billion, thirty-one million, one hundred eleven thousand, two hundred twelve".