21201200222110 has 32 divisors (see below), whose sum is σ = 40438635903360. Its totient is φ = 7975377940992.

The previous prime is 21201200222107. The next prime is 21201200222113. The reversal of 21201200222110 is 1122200210212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21201200222107) and next prime (21201200222113).

It is a super-2 number, since 2×21201200222110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201200222113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48613350 + ... + 49047529.

It is an arithmetic number, because the mean of its divisors is an integer number (1263707371980).

Almost surely, 2^{21201200222110} is an apocalyptic number.

21201200222110 is a deficient number, since it is larger than the sum of its proper divisors (19237435681250).

21201200222110 is a wasteful number, since it uses less digits than its factorization.

21201200222110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97662180.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21201200222110 its reverse (1122200210212), we get a palindrome (22323400432322).

The spelling of 21201200222110 in words is "twenty-one trillion, two hundred one billion, two hundred million, two hundred twenty-two thousand, one hundred ten".