21100120221110 has 192 divisors, whose sum is σ = 45847505874240. Its totient is φ = 6966878929920.

The previous prime is 21100120221107. The next prime is 21100120221113. The reversal of 21100120221110 is 1112202100112.

It is an interprime number because it is at equal distance from previous prime (21100120221107) and next prime (21100120221113).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100120221113) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1037309540 + ... + 1037329880.

It is an arithmetic number, because the mean of its divisors is an integer number (238789093095).

Almost surely, 2^{21100120221110} is an apocalyptic number.

21100120221110 is an abundant number, since it is smaller than the sum of its proper divisors (24747385653130).

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

21100120221110 is a wasteful number, since it uses less digits than its factorization.

21100120221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21151 (or 21144 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21100120221110 its reverse (1112202100112), we get a palindrome (22212322321222).

The spelling of 21100120221110 in words is "twenty-one trillion, one hundred billion, one hundred twenty million, two hundred twenty-one thousand, one hundred ten".