102021021212210 has 8 divisors (see below), whose sum is σ = 183637838181996. Its totient is φ = 40808408484880.

The previous prime is 102021021212171. The next prime is 102021021212221. The reversal of 102021021212210 is 12212120120201.

It can be written as a sum of positive squares in 2 ways, for example, as 87886331302441 + 14134689909769 = 9374771^2 + 3759613^2 .

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

It is a Curzon number.

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, 5101051060601 + ... + 5101051060620.

Almost surely, 2^{102021021212210} is an apocalyptic number.

102021021212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021021212210 is a deficient number, since it is larger than the sum of its proper divisors (81616816969786).

102021021212210 is a wasteful number, since it uses less digits than its factorization.

102021021212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202102121228.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102021021212210 its reverse (12212120120201), we get a palindrome (114233141332411).

The spelling of 102021021212210 in words is "one hundred two trillion, twenty-one billion, twenty-one million, two hundred twelve thousand, two hundred ten".