21112210022211 has 48 divisors (see below), whose sum is σ = 38389385848320. Its totient is φ = 10860902357760.

The previous prime is 21112210022081. The next prime is 21112210022231. The reversal of 21112210022211 is 11222001221112.

21112210022211 is a `hidden beast` number, since 211 + 1 + 221 + 0 + 0 + 22 + 211 = 666.

It is not a de Polignac number, because 21112210022211 - 2⁹ = 21112210021699 is a prime.

It is a super-2 number, since 2×21112210022211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21112210022231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147816726 + ... + 147959483.

It is an arithmetic number, because the mean of its divisors is an integer number (799778871840).

Almost surely, 2^{21112210022211} is an apocalyptic number.

21112210022211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21112210022211 is a deficient number, since it is larger than the sum of its proper divisors (17277175826109).

21112210022211 is a wasteful number, since it uses less digits than its factorization.

21112210022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295776336 (or 295776333 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 21112210022211 its reverse (11222001221112), we get a palindrome (32334211243323).

The spelling of 21112210022211 in words is "twenty-one trillion, one hundred twelve billion, two hundred ten million, twenty-two thousand, two hundred eleven".