1211907344305 has 48 divisors (see below), whose sum is σ = 1714735249920. Its totient is φ = 819737912448.

The previous prime is 1211907344243. The next prime is 1211907344357. The reversal of 1211907344305 is 5034437091121.

It is not a de Polignac number, because 1211907344305 - 2⁹ = 1211907343793 is a prime.

It is a super-2 number, since 2×1211907344305² (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 47 ways as a sum of consecutive naturals, for example, 21126372 + ... + 21183658.

It is an arithmetic number, because the mean of its divisors is an integer number (35723651040).

Almost surely, 2^{1211907344305} is an apocalyptic number.

It is an amenable number.

1211907344305 is a deficient number, since it is larger than the sum of its proper divisors (502827905615).

1211907344305 is a wasteful number, since it uses less digits than its factorization.

1211907344305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58478 (or 58471 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 1211907344305 in words is "one trillion, two hundred eleven billion, nine hundred seven million, three hundred forty-four thousand, three hundred five".