101222011221 has 16 divisors (see below), whose sum is σ = 138795003648. Its totient is φ = 65570040000.

The previous prime is 101222011183. The next prime is 101222011259. The reversal of 101222011221 is 122110222101.

It is an interprime number because it is at equal distance from previous prime (101222011183) and next prime (101222011259).

It is not a de Polignac number, because 101222011221 - 2²¹ = 101219914069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101222011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101222011271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523770 + ... + 690491.

It is an arithmetic number, because the mean of its divisors is an integer number (8674687728).

Almost surely, 2^101222011221 is an apocalyptic number.

It is an amenable number.

101222011221 is a deficient number, since it is larger than the sum of its proper divisors (37572992427).

101222011221 is a wasteful number, since it uses less digits than its factorization.

101222011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215052.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101222011221 its reverse (122110222101), we get a palindrome (223332233322).

The spelling of 101222011221 in words is "one hundred one billion, two hundred twenty-two million, eleven thousand, two hundred twenty-one".