102102202221002 has 32 divisors (see below), whose sum is σ = 158030863840080. Its totient is φ = 49438742791680.

The previous prime is 102102202220971. The next prime is 102102202221023. The reversal of 102102202221002 is 200122202201201.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 77614144192321 + 24488058028681 = 8809889^2 + 4948541^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9773774 + ... + 17312742.

Almost surely, 2^{102102202221002} is an apocalyptic number.

102102202221002 is a deficient number, since it is larger than the sum of its proper divisors (55928661619078).

102102202221002 is a wasteful number, since it uses less digits than its factorization.

102102202221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7539866.

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

Adding to 102102202221002 its reverse (200122202201201), we get a palindrome (302224404422203).

The spelling of 102102202221002 in words is "one hundred two trillion, one hundred two billion, two hundred two million, two hundred twenty-one thousand, two".