1266122412036 has 96 divisors (see below), whose sum is σ = 3344092416000. Its totient is φ = 414194234400.

The previous prime is 1266122411927. The next prime is 1266122412173. The reversal of 1266122412036 is 6302142216621.

1266122412036 is a `hidden beast` number, since 1 + 2 + 6 + 612 + 2 + 4 + 1 + 2 + 0 + 36 = 666.

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 31 ways as a sum of consecutive naturals, for example, 885865 + ... + 1821263.

It is an arithmetic number, because the mean of its divisors is an integer number (34834296000).

Almost surely, 2^{1266122412036} 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 1266122412036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672046208000).

1266122412036 is an abundant number, since it is smaller than the sum of its proper divisors (2077970003964).

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

1266122412036 is a wasteful number, since it uses less digits than its factorization.

1266122412036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935646 (or 935638 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

Adding to 1266122412036 its reverse (6302142216621), we get a palindrome (7568264628657).

The spelling of 1266122412036 in words is "one trillion, two hundred sixty-six billion, one hundred twenty-two million, four hundred twelve thousand, thirty-six".