210021431310210 has 128 divisors (see below), whose sum is σ = 543653791511040. Its totient is φ = 51618671769600.

The previous prime is 210021431310203. The next prime is 210021431310233. The reversal of 210021431310210 is 12013134120012.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 711985131 + ... + 712280049.

It is an arithmetic number, because the mean of its divisors is an integer number (4247295246180).

Almost surely, 2^{210021431310210} is an apocalyptic number.

210021431310210 is an abundant number, since it is smaller than the sum of its proper divisors (333632360200830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210021431310210 is a wasteful number, since it uses less digits than its factorization.

210021431310210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297724.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 210021431310210 its reverse (12013134120012), we get a palindrome (222034565430222).

The spelling of 210021431310210 in words is "two hundred ten trillion, twenty-one billion, four hundred thirty-one million, three hundred ten thousand, two hundred ten".