210020134402 has 16 divisors (see below), whose sum is σ = 344041653312. Its totient is φ = 95567124240.

The previous prime is 210020134397. The next prime is 210020134409. The reversal of 210020134402 is 204431020012.

It is a self number, because there is not a number n which added to its sum of digits gives 210020134402.

It is not an unprimeable number, because it can be changed into a prime (210020134409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56883348 + ... + 56887039.

It is an arithmetic number, because the mean of its divisors is an integer number (21502603332).

Almost surely, 2^210020134402 is an apocalyptic number.

210020134402 is a deficient number, since it is larger than the sum of its proper divisors (134021518910).

210020134402 is a wasteful number, since it uses less digits than its factorization.

210020134402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113770473.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 210020134402 its reverse (204431020012), we get a palindrome (414451154414).

The spelling of 210020134402 in words is "two hundred ten billion, twenty million, one hundred thirty-four thousand, four hundred two".