101100022021221 has 16 divisors (see below), whose sum is σ = 135292086639360. Its totient is φ = 67154094848960.

The previous prime is 101100022021213. The next prime is 101100022021231. The reversal of 101100022021221 is 122120220001101.

It is a cyclic number.

It is not a de Polignac number, because 101100022021221 - 2³ = 101100022021213 is a prime.

It is a super-2 number, since 2×101100022021221² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 101100022021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101100022021231) 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, 9881325 + ... + 17315906.

It is an arithmetic number, because the mean of its divisors is an integer number (8455755414960).

Almost surely, 2^{101100022021221} is an apocalyptic number.

It is an amenable number.

101100022021221 is a deficient number, since it is larger than the sum of its proper divisors (34192064618139).

101100022021221 is a wasteful number, since it uses less digits than its factorization.

101100022021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27201756.

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

Adding to 101100022021221 its reverse (122120220001101), we get a palindrome (223220242022322).

The spelling of 101100022021221 in words is "one hundred one trillion, one hundred billion, twenty-two million, twenty-one thousand, two hundred twenty-one".