2111020222061 has 2 divisors, whose sum is σ = 2111020222062. Its totient is φ = 2111020222060.

The previous prime is 2111020222001. The next prime is 2111020222097. The reversal of 2111020222061 is 1602220201112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1241452782025 + 869567440036 = 1114205^2 + 932506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111020222061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111020222001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055510111030 + 1055510111031.

It is an arithmetic number, because the mean of its divisors is an integer number (1055510111031).

Almost surely, 2^{2111020222061} is an apocalyptic number.

It is an amenable number.

2111020222061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111020222061 is an equidigital number, since it uses as much as digits as its factorization.

2111020222061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 2111020222061 its reverse (1602220201112), we get a palindrome (3713240423173).

The spelling of 2111020222061 in words is "two trillion, one hundred eleven billion, twenty million, two hundred twenty-two thousand, sixty-one".