1020303123021 has 96 divisors (see below), whose sum is σ = 1820192774400. Its totient is φ = 536309932032.

The previous prime is 1020303123017. The next prime is 1020303123029. The reversal of 1020303123021 is 1203213030201.

1020303123021 is a `hidden beast` number, since 1 + 0 + 20 + 30 + 312 + 302 + 1 = 666.

It is not a de Polignac number, because 1020303123021 - 2² = 1020303123017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020303122985 and 1020303123003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020303123029) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 454882126 + ... + 454884368.

It is an arithmetic number, because the mean of its divisors is an integer number (18960341400).

Almost surely, 2^{1020303123021} is an apocalyptic number.

It is an amenable number.

1020303123021 is a deficient number, since it is larger than the sum of its proper divisors (799889651379).

1020303123021 is a wasteful number, since it uses less digits than its factorization.

1020303123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955 (or 3952 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1020303123021 its reverse (1203213030201), we get a palindrome (2223516153222).

The spelling of 1020303123021 in words is "one trillion, twenty billion, three hundred three million, one hundred twenty-three thousand, twenty-one".