1021120002042 has 16 divisors (see below), whose sum is σ = 2333988576192. Its totient is φ = 291748572000.

The previous prime is 1021120002031. The next prime is 1021120002073. The reversal of 1021120002042 is 2402000211201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12156190459 + ... + 12156190542.

It is an arithmetic number, because the mean of its divisors is an integer number (145874286012).

Almost surely, 2^{1021120002042} is an apocalyptic number.

1021120002042 is an abundant number, since it is smaller than the sum of its proper divisors (1312868574150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021120002042 is a wasteful number, since it uses less digits than its factorization.

1021120002042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24312381013.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1021120002042 its reverse (2402000211201), we get a palindrome (3423120213243).

The spelling of 1021120002042 in words is "one trillion, twenty-one billion, one hundred twenty million, two thousand, forty-two".