1211025444513 has 8 divisors (see below), whose sum is σ = 1622353202976. Its totient is φ = 803523991200.

The previous prime is 1211025444487. The next prime is 1211025444521. The reversal of 1211025444513 is 3154445201121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1211025444513 - 2⁸ = 1211025444257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211025444593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956575548 + ... + 956576813.

It is an arithmetic number, because the mean of its divisors is an integer number (202794150372).

Almost surely, 2^{1211025444513} is an apocalyptic number.

It is an amenable number.

1211025444513 is a deficient number, since it is larger than the sum of its proper divisors (411327758463).

1211025444513 is a wasteful number, since it uses less digits than its factorization.

1211025444513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913152575.

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 1211025444513 in words is "one trillion, two hundred eleven billion, twenty-five million, four hundred forty-four thousand, five hundred thirteen".