101221110101211 has 4 divisors (see below), whose sum is σ = 134961480134952. Its totient is φ = 67480740067472.

The previous prime is 101221110101143. The next prime is 101221110101263. The reversal of 101221110101211 is 112101011122101.

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 101221110101211 - 2¹⁷ = 101221109970139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101221110105211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16870185016866 + ... + 16870185016871.

It is an arithmetic number, because the mean of its divisors is an integer number (33740370033738).

Almost surely, 2^{101221110101211} is an apocalyptic number.

101221110101211 is a deficient number, since it is larger than the sum of its proper divisors (33740370033741).

101221110101211 is an equidigital number, since it uses as much as digits as its factorization.

101221110101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33740370033740.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 101221110101211 its reverse (112101011122101), we get a palindrome (213322121223312).

The spelling of 101221110101211 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred ten million, one hundred one thousand, two hundred eleven".