1042221155051 has 8 divisors (see below), whose sum is σ = 1078189268880. Its totient is φ = 1006255004832.

The previous prime is 1042221155033. The next prime is 1042221155123. The reversal of 1042221155051 is 1505511222401.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042221155051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042221155351) 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, 632561 + ... + 1576253.

It is an arithmetic number, because the mean of its divisors is an integer number (134773658610).

Almost surely, 2^{1042221155051} is an apocalyptic number.

1042221155051 is a deficient number, since it is larger than the sum of its proper divisors (35968113829).

1042221155051 is an equidigital number, since it uses as much as digits as its factorization.

1042221155051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981805.

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 1042221155051 its reverse (1505511222401), we get a palindrome (2547732377452).

The spelling of 1042221155051 in words is "one trillion, forty-two billion, two hundred twenty-one million, one hundred fifty-five thousand, fifty-one".