1201212386064 has 140 divisors (see below), whose sum is σ = 3491581889536. Its totient is φ = 400156894656.

The previous prime is 1201212386039. The next prime is 1201212386071. The reversal of 1201212386064 is 4606832121021.

It is a happy number.

1201212386064 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 2 + 12 + 38 + 606 + 4 = 666.

It is a super-2 number, since 2×1201212386064² (a number of 25 digits) contains 22 as substring.

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 27 ways as a sum of consecutive naturals, for example, 19366269 + ... + 19428195.

Almost surely, 2^{1201212386064} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201212386064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1745790944768).

1201212386064 is an abundant number, since it is smaller than the sum of its proper divisors (2290369503472).

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

1201212386064 is an equidigital number, since it uses as much as digits as its factorization.

1201212386064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63616 (or 63595 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 1201212386064 in words is "one trillion, two hundred one billion, two hundred twelve million, three hundred eighty-six thousand, sixty-four".