102020111002 has 4 divisors (see below), whose sum is σ = 153030166506. Its totient is φ = 51010055500.

The previous prime is 102020110999. The next prime is 102020111071. The reversal of 102020111002 is 200111020201.

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., 59452581241 + 42567529761 = 243829^2 + 206319^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102020111002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505027749 + ... + 25505027752.

Almost surely, 2^102020111002 is an apocalyptic number.

102020111002 is a deficient number, since it is larger than the sum of its proper divisors (51010055504).

102020111002 is an equidigital number, since it uses as much as digits as its factorization.

102020111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51010055503.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102020111002 its reverse (200111020201), we get a palindrome (302131131203).

The spelling of 102020111002 in words is "one hundred two billion, twenty million, one hundred eleven thousand, two".