2021000102 has 16 divisors (see below), whose sum is σ = 3339838224. Its totient is φ = 909540000.

The previous prime is 2021000083. The next prime is 2021000119. The reversal of 2021000102 is 2010001202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021000102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452549 + ... + 456992.

It is an arithmetic number, because the mean of its divisors is an integer number (208739889).

Almost surely, 2^2021000102 is an apocalyptic number.

2021000102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2021000102 is a deficient number, since it is larger than the sum of its proper divisors (1318838122).

2021000102 is a wasteful number, since it uses less digits than its factorization.

2021000102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909655.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2021000102 is about 44955.5347204324. The cubic root of 2021000102 is about 1264.3154502131.

Adding to 2021000102 its reverse (2010001202), we get a palindrome (4031001304).

The spelling of 2021000102 in words is "two billion, twenty-one million, one hundred two", and thus it is an aban number.