122012211021 has 4 divisors (see below), whose sum is σ = 162682948032. Its totient is φ = 81341474012.

The previous prime is 122012210987. The next prime is 122012211071. The reversal of 122012211021 is 120112210221.

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.

It is a cyclic number.

It is not a de Polignac number, because 122012211021 - 2¹⁴ = 122012194637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122012211071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20335368501 + ... + 20335368506.

It is an arithmetic number, because the mean of its divisors is an integer number (40670737008).

Almost surely, 2^122012211021 is an apocalyptic number.

It is an amenable number.

122012211021 is a deficient number, since it is larger than the sum of its proper divisors (40670737011).

122012211021 is an equidigital number, since it uses as much as digits as its factorization.

122012211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40670737010.

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

Adding to 122012211021 its reverse (120112210221), we get a palindrome (242124421242).

It can be divided in two parts, 12201 and 2211021, that added together give a palindrome (2223222).

The spelling of 122012211021 in words is "one hundred twenty-two billion, twelve million, two hundred eleven thousand, twenty-one".