21201101200110 has 64 divisors (see below), whose sum is σ = 54800992572480. Its totient is φ = 5218323056640.

The previous prime is 21201101200091. The next prime is 21201101200129. The reversal of 21201101200110 is 1100210110212.

It is an interprime number because it is at equal distance from previous prime (21201101200091) and next prime (21201101200129).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2857926 + ... + 7111254.

It is an arithmetic number, because the mean of its divisors is an integer number (856265508945).

Almost surely, 2^{21201101200110} is an apocalyptic number.

21201101200110 is an abundant number, since it is smaller than the sum of its proper divisors (33599891372370).

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

21201101200110 is a wasteful number, since it uses less digits than its factorization.

21201101200110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266133.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21201101200110 its reverse (1100210110212), we get a palindrome (22301311310322).

The spelling of 21201101200110 in words is "twenty-one trillion, two hundred one billion, one hundred one million, two hundred thousand, one hundred ten".