221010100001200 has 30 divisors (see below), whose sum is σ = 530976765253844. Its totient is φ = 88404040000320.

The previous prime is 221010100001147. The next prime is 221010100001221. The reversal of 221010100001200 is 2100001010122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 276262624602 + ... + 276262625401.

Almost surely, 2^{221010100001200} is an apocalyptic number.

221010100001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010100001200 is an abundant number, since it is smaller than the sum of its proper divisors (309966665252644).

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

221010100001200 is a wasteful number, since it uses less digits than its factorization.

221010100001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552525250021 (or 552525250010 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221010100001200 its reverse (2100001010122), we get a palindrome (223110101011322).

The spelling of 221010100001200 in words is "two hundred twenty-one trillion, ten billion, one hundred million, one thousand, two hundred".