21110101011320 has 64 divisors (see below), whose sum is σ = 47935656252000. Its totient is φ = 8366193381888.

The previous prime is 21110101011317. The next prime is 21110101011341. The reversal of 21110101011320 is 2311010101112.

It is a junction number, because it is equal to n+sod(n) for n = 21110101011295 and 21110101011304.

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, 108567146 + ... + 108761414.

Almost surely, 2^{21110101011320} is an apocalyptic number.

21110101011320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110101011320 is an abundant number, since it is smaller than the sum of its proper divisors (26825555240680).

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

21110101011320 is a wasteful number, since it uses less digits than its factorization.

21110101011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219312 (or 219308 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 21110101011320 its reverse (2311010101112), we get a palindrome (23421111112432).

The spelling of 21110101011320 in words is "twenty-one trillion, one hundred ten billion, one hundred one million, eleven thousand, three hundred twenty".