1205211540001 has 8 divisors (see below), whose sum is σ = 1377586014464. Its totient is φ = 1032887414880.

The previous prime is 1205211539999. The next prime is 1205211540017. The reversal of 1205211540001 is 1000451125021.

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

It is a cyclic number.

It is not a de Polignac number, because 1205211540001 - 2¹ = 1205211539999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205211540901) 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, 12536025 + ... + 12631798.

It is an arithmetic number, because the mean of its divisors is an integer number (172198251808).

Almost surely, 2^{1205211540001} is an apocalyptic number.

It is an amenable number.

1205211540001 is a deficient number, since it is larger than the sum of its proper divisors (172374474463).

1205211540001 is an equidigital number, since it uses as much as digits as its factorization.

1205211540001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25174671.

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 1205211540001 its reverse (1000451125021), we get a palindrome (2205662665022).

The spelling of 1205211540001 in words is "one trillion, two hundred five billion, two hundred eleven million, five hundred forty thousand, one".