121220122002061 has 2 divisors, whose sum is σ = 121220122002062. Its totient is φ = 121220122002060.

The previous prime is 121220122001999. The next prime is 121220122002139. The reversal of 121220122002061 is 160200221022121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105315930146025 + 15904191856036 = 10262355^2 + 3988006^2 .

It is a cyclic number.

It is not a de Polignac number, because 121220122002061 - 2¹⁷ = 121220121870989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220122092061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610061001030 + 60610061001031.

It is an arithmetic number, because the mean of its divisors is an integer number (60610061001031).

Almost surely, 2^{121220122002061} is an apocalyptic number.

It is an amenable number.

121220122002061 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220122002061 is an equidigital number, since it uses as much as digits as its factorization.

121220122002061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 121220122002061 its reverse (160200221022121), we get a palindrome (281420343024182).

The spelling of 121220122002061 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, two thousand, sixty-one".