1020020030205 has 96 divisors (see below), whose sum is σ = 1808970240000. Its totient is φ = 490413813120.

The previous prime is 1020020030189. The next prime is 1020020030213. The reversal of 1020020030205 is 5020300200201.

It is not a de Polignac number, because 1020020030205 - 2⁴ = 1020020030189 is a prime.

It is a super-4 number, since 4×1020020030205⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 110879196 + ... + 110888394.

It is an arithmetic number, because the mean of its divisors is an integer number (18843440000).

Almost surely, 2^{1020020030205} is an apocalyptic number.

1020020030205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020020030205 is a deficient number, since it is larger than the sum of its proper divisors (788950209795).

1020020030205 is a wasteful number, since it uses less digits than its factorization.

1020020030205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9735 (or 9724 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

Adding to 1020020030205 its reverse (5020300200201), we get a palindrome (6040320230406).

The spelling of 1020020030205 in words is "one trillion, twenty billion, twenty million, thirty thousand, two hundred five".