1210540155241 has 4 divisors (see below), whose sum is σ = 1243257456772. Its totient is φ = 1177822853712.

The previous prime is 1210540155239. The next prime is 1210540155247. The reversal of 1210540155241 is 1425510450121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1143573584400 + 66966570841 = 1069380^2 + 258779^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210540155241 - 2¹ = 1210540155239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210540155247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16358650710 + ... + 16358650783.

It is an arithmetic number, because the mean of its divisors is an integer number (310814364193).

Almost surely, 2^{1210540155241} is an apocalyptic number.

It is an amenable number.

1210540155241 is a deficient number, since it is larger than the sum of its proper divisors (32717301531).

1210540155241 is an equidigital number, since it uses as much as digits as its factorization.

1210540155241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32717301530.

The product of its (nonzero) digits is 8000, while the sum is 31.

The spelling of 1210540155241 in words is "one trillion, two hundred ten billion, five hundred forty million, one hundred fifty-five thousand, two hundred forty-one".