21112022202111 has 48 divisors (see below), whose sum is σ = 32307794438400. Its totient is φ = 13247898136704.

The previous prime is 21112022202107. The next prime is 21112022202169. The reversal of 21112022202111 is 11120222021112.

21112022202111 is a `hidden beast` number, since 21 + 11 + 202 + 220 + 211 + 1 = 666.

It is not a de Polignac number, because 21112022202111 - 2² = 21112022202107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112022202181) 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, 18345475 + ... + 19462283.

It is an arithmetic number, because the mean of its divisors is an integer number (673079050800).

Almost surely, 2^{21112022202111} is an apocalyptic number.

21112022202111 is a deficient number, since it is larger than the sum of its proper divisors (11195772236289).

21112022202111 is a wasteful number, since it uses less digits than its factorization.

21112022202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117548 (or 1117545 counting only the distinct ones).

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

Adding to 21112022202111 its reverse (11120222021112), we get a palindrome (32232244223223).

It can be divided in two parts, 2 and 1112022202111, that multiplied together give a palindrome (2224044404222).

The spelling of 21112022202111 in words is "twenty-one trillion, one hundred twelve billion, twenty-two million, two hundred two thousand, one hundred eleven".