1020202021102 has 24 divisors (see below), whose sum is σ = 1740070999800. Its totient is φ = 447737561040.

The previous prime is 1020202021063. The next prime is 1020202021109. The reversal of 1020202021102 is 2011202020201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020202021109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72677652 + ... + 72691687.

It is an arithmetic number, because the mean of its divisors is an integer number (72502958325).

Almost surely, 2^{1020202021102} is an apocalyptic number.

1020202021102 is a deficient number, since it is larger than the sum of its proper divisors (719868978698).

1020202021102 is a wasteful number, since it uses less digits than its factorization.

1020202021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145369392 (or 145369381 counting only the distinct ones).

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

Adding to 1020202021102 its reverse (2011202020201), we get a palindrome (3031404041303).

Subtracting 1020202021102 from its reverse (2011202020201), we obtain a palindrome (990999999099).

The spelling of 1020202021102 in words is "one trillion, twenty billion, two hundred two million, twenty-one thousand, one hundred two".