221101197 has 16 divisors (see below), whose sum is σ = 297088128. Its totient is φ = 146263040.

The previous prime is 221101183. The next prime is 221101211. The reversal of 221101197 is 791101122.

It is an interprime number because it is at equal distance from previous prime (221101183) and next prime (221101211).

It is a cyclic number.

It is not a de Polignac number, because 221101197 - 2¹² = 221097101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221101117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297208 + ... + 297950.

It is an arithmetic number, because the mean of its divisors is an integer number (18568008).

Almost surely, 2^221101197 is an apocalyptic number.

It is an amenable number.

221101197 is a deficient number, since it is larger than the sum of its proper divisors (75986931).

221101197 is a wasteful number, since it uses less digits than its factorization.

221101197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 252, while the sum is 24.

The square root of 221101197 is about 14869.4719812104. The cubic root of 221101197 is about 604.6866277749.

The spelling of 221101197 in words is "two hundred twenty-one million, one hundred one thousand, one hundred ninety-seven".