122002012021 has 2 divisors, whose sum is σ = 122002012022. Its totient is φ = 122002012020.

The previous prime is 122002012001. The next prime is 122002012037. The reversal of 122002012021 is 120210200221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97272876996 + 24729135025 = 311886^2 + 157255^2 .

It is a cyclic number.

It is not a de Polignac number, because 122002012021 - 2⁷ = 122002011893 is a prime.

It is a super-3 number, since 3×122002012021³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122002011992 and 122002012010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122002012001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61001006010 + 61001006011.

It is an arithmetic number, because the mean of its divisors is an integer number (61001006011).

Almost surely, 2^122002012021 is an apocalyptic number.

It is an amenable number.

122002012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122002012021 is an equidigital number, since it uses as much as digits as its factorization.

122002012021 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 13.

Adding to 122002012021 its reverse (120210200221), we get a palindrome (242212212242).

The spelling of 122002012021 in words is "one hundred twenty-two billion, two million, twelve thousand, twenty-one".