122212111021 has 16 divisors (see below), whose sum is σ = 164088989568. Its totient is φ = 87904814400.

The previous prime is 122212111009. The next prime is 122212111037. The reversal of 122212111021 is 120111212221.

It is not a de Polignac number, because 122212111021 - 2²³ = 122203722413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122212110986 and 122212111004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212111051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61044010 + ... + 61046011.

It is an arithmetic number, because the mean of its divisors is an integer number (10255561848).

Almost surely, 2^122212111021 is an apocalyptic number.

122212111021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122212111021 is a deficient number, since it is larger than the sum of its proper divisors (41876878547).

122212111021 is a wasteful number, since it uses less digits than its factorization.

122212111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122090052.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122212111021 its reverse (120111212221), we get a palindrome (242323323242).

The spelling of 122212111021 in words is "one hundred twenty-two billion, two hundred twelve million, one hundred eleven thousand, twenty-one".