1021202102 has 4 divisors (see below), whose sum is σ = 1531803156. Its totient is φ = 510601050.

The previous prime is 1021202081. The next prime is 1021202113. The reversal of 1021202102 is 2012021201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2012021201 = 3461 ⋅581341.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255300524 + ... + 255300527.

It is an arithmetic number, because the mean of its divisors is an integer number (382950789).

Almost surely, 2^1021202102 is an apocalyptic number.

1021202102 is a deficient number, since it is larger than the sum of its proper divisors (510601054).

1021202102 is an equidigital number, since it uses as much as digits as its factorization.

1021202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510601053.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1021202102 is about 31956.2529405436. The cubic root of 1021202102 is about 1007.0179997946.

Adding to 1021202102 its reverse (2012021201), we get a palindrome (3033223303).

The spelling of 1021202102 in words is "one billion, twenty-one million, two hundred two thousand, one hundred two".