101220221222011 has 4 divisors (see below), whose sum is σ = 101224014683512. Its totient is φ = 101216427760512.

The previous prime is 101220221222009. The next prime is 101220221222017. The reversal of 101220221222011 is 110222122022101.

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 101220221222011 - 2¹ = 101220221222009 is a prime.

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 101220221222011.

It is not an unprimeable number, because it can be changed into a prime (101220221222017) 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, 1896690726 + ... + 1896744091.

It is an arithmetic number, because the mean of its divisors is an integer number (25306003670878).

Almost surely, 2^{101220221222011} is an apocalyptic number.

101220221222011 is a deficient number, since it is larger than the sum of its proper divisors (3793461501).

101220221222011 is an equidigital number, since it uses as much as digits as its factorization.

101220221222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3793461500.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 101220221222011 its reverse (110222122022101), we get a palindrome (211442343244112).

The spelling of 101220221222011 in words is "one hundred one trillion, two hundred twenty billion, two hundred twenty-one million, two hundred twenty-two thousand, eleven".