102121220002 has 8 divisors (see below), whose sum is σ = 153229574700. Its totient is φ = 51044695104.

The previous prime is 102121219997. The next prime is 102121220017. The reversal of 102121220002 is 200022121201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 89611021201 + 12510198801 = 299351^2 + 111849^2 .

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, 7949427 + ... + 7962262.

Almost surely, 2^102121220002 is an apocalyptic number.

102121220002 is a deficient number, since it is larger than the sum of its proper divisors (51108354698).

102121220002 is a wasteful number, since it uses less digits than its factorization.

102121220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15914900.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102121220002 its reverse (200022121201), we get a palindrome (302143341203).

The spelling of 102121220002 in words is "one hundred two billion, one hundred twenty-one million, two hundred twenty thousand, two".