102121021211210 has 8 divisors (see below), whose sum is σ = 183817838180196. Its totient is φ = 40848408484480.

The previous prime is 102121021211179. The next prime is 102121021211227. The reversal of 102121021211210 is 12112120121201.

It can be written as a sum of positive squares in 2 ways, for example, as 95437405408849 + 6683615802361 = 9769207^2 + 2585269^2 .

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, 5106051060551 + ... + 5106051060570.

Almost surely, 2^{102121021211210} is an apocalyptic number.

102121021211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121021211210 is a deficient number, since it is larger than the sum of its proper divisors (81696816968986).

102121021211210 is a wasteful number, since it uses less digits than its factorization.

102121021211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10212102121128.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102121021211210 its reverse (12112120121201), we get a palindrome (114233141332411).

The spelling of 102121021211210 in words is "one hundred two trillion, one hundred twenty-one billion, twenty-one million, two hundred eleven thousand, two hundred ten".