101210111209 has 8 divisors (see below), whose sum is σ = 102276197640. Its totient is φ = 100145280000.

The previous prime is 101210111203. The next prime is 101210111227. The reversal of 101210111209 is 902111012101.

It can be written as a sum of positive squares in 4 ways, for example, as 66773144025 + 34436967184 = 258405^2 + 185572^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101210111209 is a prime.

It is a super-2 number, since 2×101210111209² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101210111203) 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, 151254 + ... + 474655.

It is an arithmetic number, because the mean of its divisors is an integer number (12784524705).

Almost surely, 2^101210111209 is an apocalyptic number.

It is an amenable number.

101210111209 is a deficient number, since it is larger than the sum of its proper divisors (1066086431).

101210111209 is a wasteful number, since it uses less digits than its factorization.

101210111209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627611.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 101210111209 in words is "one hundred one billion, two hundred ten million, one hundred eleven thousand, two hundred nine".