21101132021112 has 192 divisors, whose sum is σ = 70673648572800. Its totient is φ = 5591761102080.

The previous prime is 21101132021077. The next prime is 21101132021141. The reversal of 21101132021112 is 21112023110112.

It is a happy number.

21101132021112 is a `hidden beast` number, since 2 + 110 + 11 + 320 + 211 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53737258 + ... + 54128505.

It is an arithmetic number, because the mean of its divisors is an integer number (368091919650).

Almost surely, 2^{21101132021112} is an apocalyptic number.

21101132021112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21101132021112 is an abundant number, since it is smaller than the sum of its proper divisors (49572516551688).

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

21101132021112 is a wasteful number, since it uses less digits than its factorization.

21101132021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107865818 (or 107865811 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 21101132021112 its reverse (21112023110112), we get a palindrome (42213155131224).

The spelling of 21101132021112 in words is "twenty-one trillion, one hundred one billion, one hundred thirty-two million, twenty-one thousand, one hundred twelve".