1021020020102 has 8 divisors (see below), whose sum is σ = 1536941797896. Its totient is φ = 508706087472.

The previous prime is 1021020020021. The next prime is 1021020020107. The reversal of 1021020020102 is 2010200201201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021020020107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901960583 + ... + 901961714.

It is an arithmetic number, because the mean of its divisors is an integer number (192117724737).

Almost surely, 2^{1021020020102} is an apocalyptic number.

1021020020102 is a deficient number, since it is larger than the sum of its proper divisors (515921777794).

1021020020102 is a wasteful number, since it uses less digits than its factorization.

1021020020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803922582.

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

Adding to 1021020020102 its reverse (2010200201201), we get a palindrome (3031220221303).

The spelling of 1021020020102 in words is "one trillion, twenty-one billion, twenty million, twenty thousand, one hundred two".