101210221211 has 4 divisors (see below), whose sum is σ = 110411150424. Its totient is φ = 92009292000.

The previous prime is 101210221207. The next prime is 101210221213. The reversal of 101210221211 is 112122012101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101210221211 - 2² = 101210221207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101210221213) 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 3 ways as a sum of consecutive naturals, for example, 4600464590 + ... + 4600464611.

It is an arithmetic number, because the mean of its divisors is an integer number (27602787606).

Almost surely, 2^101210221211 is an apocalyptic number.

101210221211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101210221211 is a deficient number, since it is larger than the sum of its proper divisors (9200929213).

101210221211 is an equidigital number, since it uses as much as digits as its factorization.

101210221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9200929212.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101210221211 its reverse (112122012101), we get a palindrome (213332233312).

The spelling of 101210221211 in words is "one hundred one billion, two hundred ten million, two hundred twenty-one thousand, two hundred eleven".