1021203153045 has 48 divisors (see below), whose sum is σ = 1829659353600. Its totient is φ = 526358839680.

The previous prime is 1021203153031. The next prime is 1021203153077. The reversal of 1021203153045 is 5403513021201.

1021203153045 is a `hidden beast` number, since 1 + 0 + 2 + 120 + 3 + 1 + 530 + 4 + 5 = 666.

It is not a de Polignac number, because 1021203153045 - 2¹² = 1021203148949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 535611 + ... + 1526199.

It is an arithmetic number, because the mean of its divisors is an integer number (38117903200).

Almost surely, 2^{1021203153045} is an apocalyptic number.

1021203153045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1021203153045 is a deficient number, since it is larger than the sum of its proper divisors (808456200555).

1021203153045 is a wasteful number, since it uses less digits than its factorization.

1021203153045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991370 (or 991367 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 1021203153045 its reverse (5403513021201), we get a palindrome (6424716174246).

The spelling of 1021203153045 in words is "one trillion, twenty-one billion, two hundred three million, one hundred fifty-three thousand, forty-five".