102021002101210 has 8 divisors (see below), whose sum is σ = 183637803782196. Its totient is φ = 40808400840480.

The previous prime is 102021002101157. The next prime is 102021002101217. The reversal of 102021002101210 is 12101200120201.

It can be written as a sum of positive squares in 2 ways, for example, as 90648736447369 + 11372265653841 = 9520963^2 + 3372279^2 .

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

It is not an unprimeable number, because it can be changed into a prime (102021002101217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5101050105051 + ... + 5101050105070.

Almost surely, 2^{102021002101210} is an apocalyptic number.

102021002101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021002101210 is a deficient number, since it is larger than the sum of its proper divisors (81616801680986).

102021002101210 is a wasteful number, since it uses less digits than its factorization.

102021002101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202100210128.

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

Adding to 102021002101210 its reverse (12101200120201), we get a palindrome (114122202221411).

The spelling of 102021002101210 in words is "one hundred two trillion, twenty-one billion, two million, one hundred one thousand, two hundred ten".