221000100989 has 8 divisors (see below), whose sum is σ = 231642926592. Its totient is φ = 210443452560.

The previous prime is 221000100983. The next prime is 221000101001. The reversal of 221000100989 is 989001000122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221000100989 - 2⁸ = 221000100733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000100983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21539042 + ... + 21549299.

It is an arithmetic number, because the mean of its divisors is an integer number (28955365824).

Almost surely, 2^221000100989 is an apocalyptic number.

It is an amenable number.

221000100989 is a deficient number, since it is larger than the sum of its proper divisors (10642825603).

221000100989 is a wasteful number, since it uses less digits than its factorization.

221000100989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43088587.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 221000100989 in words is "two hundred twenty-one billion, one hundred thousand, nine hundred eighty-nine".