102021212002 has 4 divisors (see below), whose sum is σ = 153031818006. Its totient is φ = 51010606000.

The previous prime is 102021211973. The next prime is 102021212003. The reversal of 102021212002 is 200212120201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 75157674201 + 26863537801 = 274149^2 + 163901^2 .

It is not an unprimeable number, because it can be changed into a prime (102021212003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505302999 + ... + 25505303002.

Almost surely, 2^102021212002 is an apocalyptic number.

102021212002 is a deficient number, since it is larger than the sum of its proper divisors (51010606004).

102021212002 is an equidigital number, since it uses as much as digits as its factorization.

102021212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51010606003.

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

Adding to 102021212002 its reverse (200212120201), we get a palindrome (302233332203).

The spelling of 102021212002 in words is "one hundred two billion, twenty-one million, two hundred twelve thousand, two".