21867223154112 has 1120 divisors, whose sum is σ = 78629865600000. Its totient is φ = 5999207639040.

The previous prime is 21867223154059. The next prime is 21867223154173. The reversal of 21867223154112 is 21145132276812.

It is a happy number.

21867223154112 is a `hidden beast` number, since 2 + 1 + 8 + 6 + 7 + 223 + 1 + 5 + 411 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 10261483287 + ... + 10261485417.

Almost surely, 2^{21867223154112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21867223154112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39314932800000).

21867223154112 is an abundant number, since it is smaller than the sum of its proper divisors (56762642445888).

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

21867223154112 is a wasteful number, since it uses less digits than its factorization.

21867223154112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404 (or 2371 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 21867223154112 in words is "twenty-one trillion, eight hundred sixty-seven billion, two hundred twenty-three million, one hundred fifty-four thousand, one hundred twelve".