1211391883614 has 16 divisors (see below), whose sum is σ = 2643036837120. Its totient is φ = 367088449560.

The previous prime is 1211391883609. The next prime is 1211391883657. The reversal of 1211391883614 is 4163881931121.

It is a super-3 number, since 3×1211391883614³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9177211174 + ... + 9177211305.

It is an arithmetic number, because the mean of its divisors is an integer number (165189802320).

Almost surely, 2^{1211391883614} is an apocalyptic number.

1211391883614 is an abundant number, since it is smaller than the sum of its proper divisors (1431644953506).

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

1211391883614 is a wasteful number, since it uses less digits than its factorization.

1211391883614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18354422495.

The product of its digits is 248832, while the sum is 48.

The spelling of 1211391883614 in words is "one trillion, two hundred eleven billion, three hundred ninety-one million, eight hundred eighty-three thousand, six hundred fourteen".