100964221 has 4 divisors (see below), whose sum is σ = 100984572. Its totient is φ = 100943872.

The previous prime is 100964219. The next prime is 100964251. The reversal of 100964221 is 122469001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51768025 + 49196196 = 7195^2 + 7014^2 .

It is a cyclic number.

It is not a de Polignac number, because 100964221 - 2¹ = 100964219 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 (100964251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2685 + ... + 14461.

It is an arithmetic number, because the mean of its divisors is an integer number (25246143).

Almost surely, 2^100964221 is an apocalyptic number.

It is an amenable number.

100964221 is a deficient number, since it is larger than the sum of its proper divisors (20351).

100964221 is an equidigital number, since it uses as much as digits as its factorization.

100964221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20350.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 100964221 is about 10048.0953916650. The cubic root of 100964221 is about 465.6459531493.

The spelling of 100964221 in words is "one hundred million, nine hundred sixty-four thousand, two hundred twenty-one".