102121221100202 has 16 divisors (see below), whose sum is σ = 153358661723400. Its totient is φ = 51001700966400.

The previous prime is 102121221100169. The next prime is 102121221100231. The reversal of 102121221100202 is 202001122121201.

It can be written as a sum of positive squares in 4 ways, for example, as 98892662581441 + 3228558518761 = 9944479^2 + 1796819^2 .

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, 2393177 + ... + 14490332.

Almost surely, 2^{102121221100202} is an apocalyptic number.

102121221100202 is a deficient number, since it is larger than the sum of its proper divisors (51237440623198).

102121221100202 is a wasteful number, since it uses less digits than its factorization.

102121221100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16887001.

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

Adding to 102121221100202 its reverse (202001122121201), we get a palindrome (304122343221403).

The spelling of 102121221100202 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred thousand, two hundred two".