1020210120202 has 48 divisors (see below), whose sum is σ = 1924019735400. Its totient is φ = 402142430592.

The previous prime is 1020210120191. The next prime is 1020210120229. The reversal of 1020210120202 is 2020210120201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 290619106281 + 729591013921 = 539091^2 + 854161^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1092577 + ... + 1798372.

Almost surely, 2^{1020210120202} is an apocalyptic number.

1020210120202 is a deficient number, since it is larger than the sum of its proper divisors (903809615198).

1020210120202 is a wasteful number, since it uses less digits than its factorization.

1020210120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891255 (or 2891248 counting only the distinct ones).

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

Adding to 1020210120202 its reverse (2020210120201), we get a palindrome (3040420240403).

Subtracting 1020210120202 from its reverse (2020210120201), we obtain a palindrome (999999999999).

The spelling of 1020210120202 in words is "one trillion, twenty billion, two hundred ten million, one hundred twenty thousand, two hundred two".