21201102011210 has 32 divisors (see below), whose sum is σ = 41813050780800. Its totient is φ = 7675825728960.

The previous prime is 21201102011209. The next prime is 21201102011213. The reversal of 21201102011210 is 1211020110212.

It is not an unprimeable number, because it can be changed into a prime (21201102011213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420798590 + ... + 420848969.

It is an arithmetic number, because the mean of its divisors is an integer number (1306657836900).

Almost surely, 2^{21201102011210} is an apocalyptic number.

21201102011210 is a deficient number, since it is larger than the sum of its proper divisors (20611948769590).

21201102011210 is a wasteful number, since it uses less digits than its factorization.

21201102011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841647806.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21201102011210 its reverse (1211020110212), we get a palindrome (22412122121422).

The spelling of 21201102011210 in words is "twenty-one trillion, two hundred one billion, one hundred two million, eleven thousand, two hundred ten".