1021102102 has 4 divisors (see below), whose sum is σ = 1531653156. Its totient is φ = 510551050.

The previous prime is 1021102079. The next prime is 1021102109. The reversal of 1021102102 is 2012011201.

1021102102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021102109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255275524 + ... + 255275527.

It is an arithmetic number, because the mean of its divisors is an integer number (382913289).

Almost surely, 2^1021102102 is an apocalyptic number.

1021102102 is a deficient number, since it is larger than the sum of its proper divisors (510551054).

1021102102 is an equidigital number, since it uses as much as digits as its factorization.

1021102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510551053.

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

The square root of 1021102102 is about 31954.6882632267. The cubic root of 1021102102 is about 1006.9851283754.

Adding to 1021102102 its reverse (2012011201), we get a palindrome (3033113303).

Subtracting 1021102102 from its reverse (2012011201), we obtain a palindrome (990909099).

The spelling of 1021102102 in words is "one billion, twenty-one million, one hundred two thousand, one hundred two".