1213051583071 has 16 divisors (see below), whose sum is σ = 1274912524800.
Its totient is φ = 1151979107488.
The previous prime is 1213051583069. The next prime is 1213051583089. The reversal of 1213051583071 is 1703851503121.
It is a cyclic number.
It is not a de Polignac number, because 1213051583071 - 21 = 1213051583069 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 1213051583071.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1213051584071) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1550745 + ... + 2197933.
It is an arithmetic number, because the mean of its divisors is an integer number (79682032800).
Almost surely, 21213051583071 is an apocalyptic number.
1213051583071 is a deficient number, since it is larger than the sum of its proper divisors (61860941729).
1213051583071 is a wasteful number, since it uses less digits than its factorization.
1213051583071 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 647798.
The product of its (nonzero) digits is 25200, while the sum is 37.
The spelling of 1213051583071 in words is "one trillion, two hundred thirteen billion, fifty-one million, five hundred eighty-three thousand, seventy-one".