21201210110010 has 128 divisors (see below), whose sum is σ = 61624375948800. Its totient is φ = 4564768481280.

The previous prime is 21201210110009. The next prime is 21201210110063. The reversal of 21201210110010 is 1001101210212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42205375 + ... + 42704754.

It is an arithmetic number, because the mean of its divisors is an integer number (481440437100).

Almost surely, 2^{21201210110010} is an apocalyptic number.

21201210110010 is an abundant number, since it is smaller than the sum of its proper divisors (40423165838790).

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

21201210110010 is a wasteful number, since it uses less digits than its factorization.

21201210110010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84910216.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21201210110010 its reverse (1001101210212), we get a palindrome (22202311320222).

The spelling of 21201210110010 in words is "twenty-one trillion, two hundred one billion, two hundred ten million, one hundred ten thousand, ten".