221011101210100 has 36 divisors (see below), whose sum is σ = 484250342945824. Its totient is φ = 87546144941280.

The previous prime is 221011101210091. The next prime is 221011101210149. The reversal of 221011101210100 is 1012101110122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10728683934 + ... + 10728704533.

Almost surely, 2^{221011101210100} is an apocalyptic number.

221011101210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221011101210100 is an abundant number, since it is smaller than the sum of its proper divisors (263239241735724).

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

221011101210100 is a wasteful number, since it uses less digits than its factorization.

221011101210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21457388584 (or 21457388577 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 221011101210100 its reverse (1012101110122), we get a palindrome (222023202320222).

The spelling of 221011101210100 in words is "two hundred twenty-one trillion, eleven billion, one hundred one million, two hundred ten thousand, one hundred".