21110201012211 has 32 divisors (see below), whose sum is σ = 30448129766400. Its totient is φ = 12964308940800.

The previous prime is 21110201012209. The next prime is 21110201012221. The reversal of 21110201012211 is 11221010201112.

It is a happy number.

It is not a de Polignac number, because 21110201012211 - 2¹ = 21110201012209 is a prime.

It is a super-2 number, since 2×21110201012211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21110201012221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250470 + ... + 6502548.

It is an arithmetic number, because the mean of its divisors is an integer number (951504055200).

Almost surely, 2^{21110201012211} is an apocalyptic number.

21110201012211 is a deficient number, since it is larger than the sum of its proper divisors (9337928754189).

21110201012211 is a wasteful number, since it uses less digits than its factorization.

21110201012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6253739.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21110201012211 its reverse (11221010201112), we get a palindrome (32331211213323).

The spelling of 21110201012211 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, twelve thousand, two hundred eleven".