1021155325403 has 2 divisors, whose sum is σ = 1021155325404. Its totient is φ = 1021155325402.

The previous prime is 1021155325391. The next prime is 1021155325441. The reversal of 1021155325403 is 3045235511201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021155325403 - 2⁶ = 1021155325339 is a prime.

It is a super-2 number, since 2×1021155325403² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1021155325403.

It is not a weakly prime, because it can be changed into another prime (1021155385403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510577662701 + 510577662702.

It is an arithmetic number, because the mean of its divisors is an integer number (510577662702).

Almost surely, 2^{1021155325403} is an apocalyptic number.

1021155325403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021155325403 is an equidigital number, since it uses as much as digits as its factorization.

1021155325403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 1021155325403 in words is "one trillion, twenty-one billion, one hundred fifty-five million, three hundred twenty-five thousand, four hundred three".