122011010221 has 4 divisors (see below), whose sum is σ = 122011753600. Its totient is φ = 122010266844.

The previous prime is 122011010171. The next prime is 122011010237. The reversal of 122011010221 is 122010110221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122010110221 = 1151 ⋅106003571.

It is a cyclic number.

It is not a de Polignac number, because 122011010221 - 2¹⁵ = 122010977453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011010021) 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 3 ways as a sum of consecutive naturals, for example, 4731 + ... + 494008.

It is an arithmetic number, because the mean of its divisors is an integer number (30502938400).

Almost surely, 2^122011010221 is an apocalyptic number.

It is an amenable number.

122011010221 is a deficient number, since it is larger than the sum of its proper divisors (743379).

122011010221 is an equidigital number, since it uses as much as digits as its factorization.

122011010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743378.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122011010221 its reverse (122010110221), we get a palindrome (244021120442).

The spelling of 122011010221 in words is "one hundred twenty-two billion, eleven million, ten thousand, two hundred twenty-one".