20110122010221 has 8 divisors (see below), whose sum is σ = 26814797027424. Its totient is φ = 13406097499920.

The previous prime is 20110122010159. The next prime is 20110122010241. The reversal of 20110122010221 is 12201022101102.

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

It is not a de Polignac number, because 20110122010221 - 2¹⁴ = 20110121993837 is a prime.

It is a super-2 number, since 2×20110122010221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20110122010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110122010241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162554586 + ... + 162678251.

It is an arithmetic number, because the mean of its divisors is an integer number (3351849628428).

Almost surely, 2^{20110122010221} is an apocalyptic number.

It is an amenable number.

20110122010221 is a deficient number, since it is larger than the sum of its proper divisors (6704675017203).

20110122010221 is a wasteful number, since it uses less digits than its factorization.

20110122010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325253451.

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

Adding to 20110122010221 its reverse (12201022101102), we get a palindrome (32311144111323).

The spelling of 20110122010221 in words is "twenty trillion, one hundred ten billion, one hundred twenty-two million, ten thousand, two hundred twenty-one".