122002021121 has 2 divisors, whose sum is σ = 122002021122. Its totient is φ = 122002021120.

The previous prime is 122002021111. The next prime is 122002021181. The reversal of 122002021121 is 121120200221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103516627600 + 18485393521 = 321740^2 + 135961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122002021121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122002021096 and 122002021105.

It is not a weakly prime, because it can be changed into another prime (122002021111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61001010560 + 61001010561.

It is an arithmetic number, because the mean of its divisors is an integer number (61001010561).

Almost surely, 2^122002021121 is an apocalyptic number.

It is an amenable number.

122002021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

122002021121 is an equidigital number, since it uses as much as digits as its factorization.

122002021121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 122002021121 its reverse (121120200221), we get a palindrome (243122221342).

The spelling of 122002021121 in words is "one hundred twenty-two billion, two million, twenty-one thousand, one hundred twenty-one".