102121010202010 has 8 divisors (see below), whose sum is σ = 183817818363636. Its totient is φ = 40848404080800.

The previous prime is 102121010201999. The next prime is 102121010202041. The reversal of 102121010202010 is 10202010121201.

It can be written as a sum of positive squares in 2 ways, for example, as 99780101022001 + 2340909180009 = 9988999^2 + 1530003^2 .

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, 5106050510091 + ... + 5106050510110.

Almost surely, 2^{102121010202010} is an apocalyptic number.

102121010202010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121010202010 is a deficient number, since it is larger than the sum of its proper divisors (81696808161626).

102121010202010 is a wasteful number, since it uses less digits than its factorization.

102121010202010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212101020208.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102121010202010 its reverse (10202010121201), we get a palindrome (112323020323211).

The spelling of 102121010202010 in words is "one hundred two trillion, one hundred twenty-one billion, ten million, two hundred two thousand, ten".