21223140112120 has 64 divisors (see below), whose sum is σ = 48226229258400. Its totient is φ = 8404965004800.

The previous prime is 21223140112079. The next prime is 21223140112147. The reversal of 21223140112120 is 2121104132212.

It is a junction number, because it is equal to n+sod(n) for n = 21223140112091 and 21223140112100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228856002 + ... + 228948718.

Almost surely, 2^{21223140112120} is an apocalyptic number.

21223140112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21223140112120 is an abundant number, since it is smaller than the sum of its proper divisors (27003089146280).

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

21223140112120 is a wasteful number, since it uses less digits than its factorization.

21223140112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149488 (or 149484 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21223140112120 its reverse (2121104132212), we get a palindrome (23344244244332).

The spelling of 21223140112120 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred forty million, one hundred twelve thousand, one hundred twenty".