102211121211 has 8 divisors (see below), whose sum is σ = 138515618064. Its totient is φ = 67023685920.

The previous prime is 102211121197. The next prime is 102211121231. The reversal of 102211121211 is 112121112201.

It is a happy number.

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

It is not a de Polignac number, because 102211121211 - 2⁹ = 102211120699 is a prime.

It is a super-2 number, since 2×102211121211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102211121231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279265176 + ... + 279265541.

It is an arithmetic number, because the mean of its divisors is an integer number (17314452258).

Almost surely, 2^102211121211 is an apocalyptic number.

102211121211 is a deficient number, since it is larger than the sum of its proper divisors (36304496853).

102211121211 is an equidigital number, since it uses as much as digits as its factorization.

102211121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558530781.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102211121211 its reverse (112121112201), we get a palindrome (214332233412).

The spelling of 102211121211 in words is "one hundred two billion, two hundred eleven million, one hundred twenty-one thousand, two hundred eleven".