21123013110000 has 100 divisors (see below), whose sum is σ = 68187902817672. Its totient is φ = 5632803488000.

The previous prime is 21123013109993. The next prime is 21123013110007. The reversal of 21123013110000 is 1131032112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21123013109993) and next prime (21123013110007).

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21123013110007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 352020219 + ... + 352080218.

Almost surely, 2^{21123013110000} is an apocalyptic number.

21123013110000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21123013110000 is an abundant number, since it is smaller than the sum of its proper divisors (47064889707672).

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

21123013110000 is an equidigital number, since it uses as much as digits as its factorization.

21123013110000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704100468 (or 704100447 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21123013110000 its reverse (1131032112), we get a palindrome (21124144142112).

The spelling of 21123013110000 in words is "twenty-one trillion, one hundred twenty-three billion, thirteen million, one hundred ten thousand".