101021011221 has 8 divisors (see below), whose sum is σ = 145055811040. Its totient is φ = 62166776112.

The previous prime is 101021011177. The next prime is 101021011253. The reversal of 101021011221 is 122110120101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101021011221 - 2³³ = 92431076629 is a prime.

It is a super-2 number, since 2×101021011221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101021011197 and 101021011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021011271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1295141131 + ... + 1295141208.

It is an arithmetic number, because the mean of its divisors is an integer number (18131976380).

Almost surely, 2^101021011221 is an apocalyptic number.

It is an amenable number.

101021011221 is a deficient number, since it is larger than the sum of its proper divisors (44034799819).

101021011221 is a wasteful number, since it uses less digits than its factorization.

101021011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590282355.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101021011221 its reverse (122110120101), we get a palindrome (223131131322).

The spelling of 101021011221 in words is "one hundred one billion, twenty-one million, eleven thousand, two hundred twenty-one".