102021001010 has 8 divisors (see below), whose sum is σ = 183637801836. Its totient is φ = 40808400400.

The previous prime is 102021000971. The next prime is 102021001067. The reversal of 102021001010 is 10100120201.

It can be written as a sum of positive squares in 2 ways, for example, as 97354608289 + 4666392721 = 312017^2 + 68311^2 .

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

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, 5101050041 + ... + 5101050060.

Almost surely, 2^102021001010 is an apocalyptic number.

102021001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021001010 is a deficient number, since it is larger than the sum of its proper divisors (81616800826).

102021001010 is a wasteful number, since it uses less digits than its factorization.

102021001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10202100108.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 102021001010 its reverse (10100120201), we get a palindrome (112121121211).

The spelling of 102021001010 in words is "one hundred two billion, twenty-one million, one thousand, ten".