1042155322201 has 4 divisors (see below), whose sum is σ = 1191034653952. Its totient is φ = 893275990452.

The previous prime is 1042155322163. The next prime is 1042155322231. The reversal of 1042155322201 is 1022235512401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1042155322201 - 2²⁷ = 1042021104473 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 1042155322201.

It is not an unprimeable number, because it can be changed into a prime (1042155322231) 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, 74439665865 + ... + 74439665878.

It is an arithmetic number, because the mean of its divisors is an integer number (297758663488).

Almost surely, 2^{1042155322201} is an apocalyptic number.

It is an amenable number.

1042155322201 is a deficient number, since it is larger than the sum of its proper divisors (148879331751).

1042155322201 is an equidigital number, since it uses as much as digits as its factorization.

1042155322201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148879331750.

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 1042155322201 in words is "one trillion, forty-two billion, one hundred fifty-five million, three hundred twenty-two thousand, two hundred one".