101211221209 has 8 divisors (see below), whose sum is σ = 116446276800. Its totient is φ = 86170243056.

The previous prime is 101211221203. The next prime is 101211221213. The reversal of 101211221209 is 902122112101.

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 101211221209 - 2⁷ = 101211221081 is a prime.

It is a super-2 number, since 2×101211221209² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101211221209.

It is not an unprimeable number, because it can be changed into a prime (101211221203) 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, 48518239 + ... + 48520324.

It is an arithmetic number, because the mean of its divisors is an integer number (14555784600).

Almost surely, 2^101211221209 is an apocalyptic number.

It is an amenable number.

101211221209 is a deficient number, since it is larger than the sum of its proper divisors (15235055591).

101211221209 is an equidigital number, since it uses as much as digits as its factorization.

101211221209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97038719.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 101211221209 in words is "one hundred one billion, two hundred eleven million, two hundred twenty-one thousand, two hundred nine".