21110231040212 has 24 divisors (see below), whose sum is σ = 37055284070112. Its totient is φ = 10523008346400.

The previous prime is 21110231040181. The next prime is 21110231040233. The reversal of 21110231040212 is 21204013201112.

It is a super-2 number, since 2×21110231040212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77255387 + ... + 77528157.

It is an arithmetic number, because the mean of its divisors is an integer number (1543970169588).

Almost surely, 2^{21110231040212} is an apocalyptic number.

It is an amenable number.

21110231040212 is a deficient number, since it is larger than the sum of its proper divisors (15945053029900).

21110231040212 is a wasteful number, since it uses less digits than its factorization.

21110231040212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331559 (or 331557 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21110231040212 its reverse (21204013201112), we get a palindrome (42314244241324).

The spelling of 21110231040212 in words is "twenty-one trillion, one hundred ten billion, two hundred thirty-one million, forty thousand, two hundred twelve".