2121022203061 has 2 divisors, whose sum is σ = 2121022203062. Its totient is φ = 2121022203060.

The previous prime is 2121022203049. The next prime is 2121022203163. The reversal of 2121022203061 is 1603022201212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1643498360100 + 477523842961 = 1281990^2 + 691031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121022203061 - 2⁵ = 2121022203029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121022203011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060511101530 + 1060511101531.

It is an arithmetic number, because the mean of its divisors is an integer number (1060511101531).

Almost surely, 2^{2121022203061} is an apocalyptic number.

It is an amenable number.

2121022203061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121022203061 is an equidigital number, since it uses as much as digits as its factorization.

2121022203061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2121022203061 its reverse (1603022201212), we get a palindrome (3724044404273).

The spelling of 2121022203061 in words is "two trillion, one hundred twenty-one billion, twenty-two million, two hundred three thousand, sixty-one".