102102221020202 has 8 divisors (see below), whose sum is σ = 164934357032676. Its totient is φ = 47124102009312.

The previous prime is 102102221020141. The next prime is 102102221020243. The reversal of 102102221020202 is 202020122201201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87199756762561 + 14902464257641 = 9338081^2 + 3860371^2 .

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, 1963504250363 + ... + 1963504250414.

Almost surely, 2^{102102221020202} is an apocalyptic number.

102102221020202 is a deficient number, since it is larger than the sum of its proper divisors (62832136012474).

102102221020202 is a wasteful number, since it uses less digits than its factorization.

102102221020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927008500792.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102102221020202 its reverse (202020122201201), we get a palindrome (304122343221403).

The spelling of 102102221020202 in words is "one hundred two trillion, one hundred two billion, two hundred twenty-one million, twenty thousand, two hundred two".