122002211221 has 16 divisors (see below), whose sum is σ = 134638640640. Its totient is φ = 109630762480.

The previous prime is 122002211143. The next prime is 122002211267. The reversal of 122002211221 is 122112200221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122002211221 - 2⁹ = 122002210709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122002211195 and 122002211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122002211321) 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, 143310 + ... + 514336.

It is an arithmetic number, because the mean of its divisors is an integer number (8414915040).

Almost surely, 2^122002211221 is an apocalyptic number.

122002211221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122002211221 is a deficient number, since it is larger than the sum of its proper divisors (12636429419).

122002211221 is a wasteful number, since it uses less digits than its factorization.

122002211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371384.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122002211221 its reverse (122112200221), we get a palindrome (244114411442).

It can be divided in two parts, 12200221 and 1221, that multiplied together give a palindrome (14896469841).

The spelling of 122002211221 in words is "one hundred twenty-two billion, two million, two hundred eleven thousand, two hundred twenty-one".