122002122222221 has 16 divisors (see below), whose sum is σ = 122881131874800. Its totient is φ = 121126324224000.

The previous prime is 122002122222179. The next prime is 122002122222241. The reversal of 122002122222221 is 122222221200221.

It can be written as a sum of positive squares in 8 ways, for example, as 64670724159721 + 57331398062500 = 8041811^2 + 7571750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122002122222221 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 (122002122222241) 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, 279033545 + ... + 279470433.

It is an arithmetic number, because the mean of its divisors is an integer number (7680070742175).

Almost surely, 2^{122002122222221} is an apocalyptic number.

It is an amenable number.

122002122222221 is a deficient number, since it is larger than the sum of its proper divisors (879009652579).

122002122222221 is a wasteful number, since it uses less digits than its factorization.

122002122222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440560.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 122002122222221 its reverse (122222221200221), we get a palindrome (244224343422442).

The spelling of 122002122222221 in words is "one hundred twenty-two trillion, two billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".