21111010022112 has 24 divisors (see below), whose sum is σ = 55416401308296. Its totient is φ = 7037003340672.

The previous prime is 21111010022107. The next prime is 21111010022261. The reversal of 21111010022112 is 21122001011112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 21111010022091 and 21111010022100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109953177103 + ... + 109953177294.

It is an arithmetic number, because the mean of its divisors is an integer number (2309016721179).

Almost surely, 2^{21111010022112} is an apocalyptic number.

It is an amenable number.

21111010022112 is an abundant number, since it is smaller than the sum of its proper divisors (34305391286184).

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

21111010022112 is a wasteful number, since it uses less digits than its factorization.

21111010022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219906354410 (or 219906354402 counting only the distinct ones).

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

Adding to 21111010022112 its reverse (21122001011112), we get a palindrome (42233011033224).

The spelling of 21111010022112 in words is "twenty-one trillion, one hundred eleven billion, ten million, twenty-two thousand, one hundred twelve".