1206211422636 has 72 divisors (see below), whose sum is σ = 3407346725328. Its totient is φ = 356603520000.

The previous prime is 1206211422629. The next prime is 1206211422671. The reversal of 1206211422636 is 6362241126021.

1206211422636 is a `hidden beast` number, since 1 + 2 + 0 + 6 + 2 + 1 + 14 + 2 + 2 + 636 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1206211422636.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37129965 + ... + 37162436.

It is an arithmetic number, because the mean of its divisors is an integer number (47324260074).

Almost surely, 2^{1206211422636} is an apocalyptic number.

It is an amenable number.

1206211422636 is an abundant number, since it is smaller than the sum of its proper divisors (2201135302692).

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

1206211422636 is a wasteful number, since it uses less digits than its factorization.

1206211422636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74292463 (or 74292458 counting only the distinct ones).

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

Adding to 1206211422636 its reverse (6362241126021), we get a palindrome (7568452548657).

The spelling of 1206211422636 in words is "one trillion, two hundred six billion, two hundred eleven million, four hundred twenty-two thousand, six hundred thirty-six".