102221221002002 has 32 divisors (see below), whose sum is σ = 154269781556400. Its totient is φ = 50798815930368.

The previous prime is 102221221001981. The next prime is 102221221002011. The reversal of 102221221002002 is 200200122122201.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 35909205320041 + 66312015681961 = 5992429^2 + 8143219^2 .

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, 609358874 + ... + 609526602.

Almost surely, 2^{102221221002002} is an apocalyptic number.

102221221002002 is a deficient number, since it is larger than the sum of its proper divisors (52048560554398).

102221221002002 is a wasteful number, since it uses less digits than its factorization.

102221221002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170270.

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

Adding to 102221221002002 its reverse (200200122122201), we get a palindrome (302421343124203).

The spelling of 102221221002002 in words is "one hundred two trillion, two hundred twenty-one billion, two hundred twenty-one million, two thousand, two".