1212115968 has 176 divisors, whose sum is σ = 4103170560. Its totient is φ = 346263552.

The previous prime is 1212115873. The next prime is 1212115973. The reversal of 1212115968 is 8695112121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190405 + ... + 196667.

Almost surely, 2^1212115968 is an apocalyptic number.

1212115968 is a gapful number since it is divisible by the number (18) 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 1212115968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2051585280).

1212115968 is an abundant number, since it is smaller than the sum of its proper divisors (2891054592).

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

1212115968 is an equidigital number, since it uses as much as digits as its factorization.

1212115968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6299 (or 6275 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 1212115968 is about 34815.4558781010. The cubic root of 1212115968 is about 1066.2230266212.

The spelling of 1212115968 in words is "one billion, two hundred twelve million, one hundred fifteen thousand, nine hundred sixty-eight".