221211300300100 has 72 divisors (see below), whose sum is σ = 523670691743136. Its totient is φ = 80439979200000.

The previous prime is 221211300300061. The next prime is 221211300300119. The reversal of 221211300300100 is 1003003112122.

It is a super-2 number, since 2×221211300300100² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212000655 + ... + 213041545.

It is an arithmetic number, because the mean of its divisors is an integer number (7273204051988).

Almost surely, 2^{221211300300100} is an apocalyptic number.

221211300300100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221211300300100 is an abundant number, since it is smaller than the sum of its proper divisors (302459391443036).

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

221211300300100 is a wasteful number, since it uses less digits than its factorization.

221211300300100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234117 (or 1234110 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221211300300100 its reverse (1003003112122), we get a palindrome (222214303412222).

The spelling of 221211300300100 in words is "two hundred twenty-one trillion, two hundred eleven billion, three hundred million, three hundred thousand, one hundred".