213220101 has 8 divisors (see below), whose sum is σ = 290905120. Its totient is φ = 138840912.

The previous prime is 213220099. The next prime is 213220127. The reversal of 213220101 is 101022312.

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

It is not a de Polignac number, because 213220101 - 2¹ = 213220099 is a prime.

It is a super-2 number, since 2×213220101² = 90925622940900402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213220181) 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, 826306 + ... + 826563.

It is an arithmetic number, because the mean of its divisors is an integer number (36363140).

Almost surely, 2^213220101 is an apocalyptic number.

It is an amenable number.

213220101 is a deficient number, since it is larger than the sum of its proper divisors (77685019).

213220101 is a wasteful number, since it uses less digits than its factorization.

213220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652915.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 213220101 is about 14602.0581083627. The cubic root of 213220101 is about 597.4148975156.

Adding to 213220101 its reverse (101022312), we get a palindrome (314242413).

The spelling of 213220101 in words is "two hundred thirteen million, two hundred twenty thousand, one hundred one".