101221000211 has 4 divisors (see below), whose sum is σ = 107175176712. Its totient is φ = 95266823712.

The previous prime is 101221000163. The next prime is 101221000259. The reversal of 101221000211 is 112000122101.

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

It is an interprime number because it is at equal distance from previous prime (101221000163) and next prime (101221000259).

It is a cyclic number.

It is not a de Polignac number, because 101221000211 - 2¹⁸ = 101220738067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101221000192 and 101221000201.

It is not an unprimeable number, because it can be changed into a prime (101221000411) 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, 2977088225 + ... + 2977088258.

It is an arithmetic number, because the mean of its divisors is an integer number (26793794178).

Almost surely, 2^101221000211 is an apocalyptic number.

101221000211 is a deficient number, since it is larger than the sum of its proper divisors (5954176501).

101221000211 is an equidigital number, since it uses as much as digits as its factorization.

101221000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5954176500.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101221000211 its reverse (112000122101), we get a palindrome (213221122312).

The spelling of 101221000211 in words is "one hundred one billion, two hundred twenty-one million, two hundred eleven", and thus it is an aban number.