21126233266140 has 48 divisors (see below), whose sum is σ = 60036340516992. Its totient is φ = 5549577692736.

The previous prime is 21126233266063. The next prime is 21126233266157. The reversal of 21126233266140 is 4166233262112.

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, 2627636934 + ... + 2627644973.

It is an arithmetic number, because the mean of its divisors is an integer number (1250757094104).

Almost surely, 2^{21126233266140} is an apocalyptic number.

21126233266140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21126233266140 is an abundant number, since it is smaller than the sum of its proper divisors (38910107250852).

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

21126233266140 is a wasteful number, since it uses less digits than its factorization.

21126233266140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255281986 (or 5255281984 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 21126233266140 in words is "twenty-one trillion, one hundred twenty-six billion, two hundred thirty-three million, two hundred sixty-six thousand, one hundred forty".