210101021111209 has 8 divisors (see below), whose sum is σ = 222470838374688. Its totient is φ = 197732418699840.

The previous prime is 210101021111183. The next prime is 210101021111221. The reversal of 210101021111209 is 902111120101012.

It is a happy number.

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 210101021111209 - 2⁷ = 210101021111081 is a prime.

It is a super-2 number, since 2×210101021111209² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210101021111209.

It is not an unprimeable number, because it can be changed into a prime (210101021111299) 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, 303356947 + ... + 304048744.

It is an arithmetic number, because the mean of its divisors is an integer number (27808854796836).

Almost surely, 2^{210101021111209} is an apocalyptic number.

It is an amenable number.

210101021111209 is a deficient number, since it is larger than the sum of its proper divisors (12369817263479).

210101021111209 is a wasteful number, since it uses less digits than its factorization.

210101021111209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607426055.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 210101021111209 in words is "two hundred ten trillion, one hundred one billion, twenty-one million, one hundred eleven thousand, two hundred nine".