1321406651116 has 24 divisors (see below), whose sum is σ = 2413101335904. Its totient is φ = 631951457280.

The previous prime is 1321406651107. The next prime is 1321406651141. The reversal of 1321406651116 is 6111566041231.

It is a happy number.

It is a super-2 number, since 2×1321406651116² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2094526 + ... + 2651386.

It is an arithmetic number, because the mean of its divisors is an integer number (100545888996).

Almost surely, 2^{1321406651116} is an apocalyptic number.

It is an amenable number.

1321406651116 is a deficient number, since it is larger than the sum of its proper divisors (1091694684788).

1321406651116 is a wasteful number, since it uses less digits than its factorization.

1321406651116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582681 (or 582679 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 1321406651116 in words is "one trillion, three hundred twenty-one billion, four hundred six million, six hundred fifty-one thousand, one hundred sixteen".