1021000202 has 8 divisors (see below), whose sum is σ = 1541255556. Its totient is φ = 507248352.

The previous prime is 1021000157. The next prime is 1021000217. The reversal of 1021000202 is 2020001201.

It can be written as a sum of positive squares in 2 ways, for example, as 948085681 + 72914521 = 30791^2 + 8539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1021000202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1625483 + ... + 1626110.

Almost surely, 2^1021000202 is an apocalyptic number.

1021000202 is a deficient number, since it is larger than the sum of its proper divisors (520255354).

1021000202 is a wasteful number, since it uses less digits than its factorization.

1021000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251752.

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

The square root of 1021000202 is about 31953.0937782244. The cubic root of 1021000202 is about 1006.9516301915.

Adding to 1021000202 its reverse (2020001201), we get a palindrome (3041001403).

Subtracting 1021000202 from its reverse (2020001201), we obtain a palindrome (999000999).

The spelling of 1021000202 in words is "one billion, twenty-one million, two hundred two", and thus it is an aban number.