102002120210 has 16 divisors (see below), whose sum is σ = 189934983000. Its totient is φ = 39393922176.

The previous prime is 102002120203. The next prime is 102002120221. The reversal of 102002120210 is 12021200201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 96768899929 + 5233220281 = 311077^2 + 72341^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102002120191 and 102002120200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175865435 + ... + 175866014.

Almost surely, 2^102002120210 is an apocalyptic number.

102002120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102002120210 is a deficient number, since it is larger than the sum of its proper divisors (87932862790).

102002120210 is a wasteful number, since it uses less digits than its factorization.

102002120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351731485.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102002120210 its reverse (12021200201), we get a palindrome (114023320411).

The spelling of 102002120210 in words is "one hundred two billion, two million, one hundred twenty thousand, two hundred ten".