10211611554061 has 2 divisors, whose sum is σ = 10211611554062. Its totient is φ = 10211611554060.

The previous prime is 10211611554041. The next prime is 10211611554071. The reversal of 10211611554061 is 16045511611201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8841517893961 + 1370093660100 = 2973469^2 + 1170510^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211611554061 - 2⁵ = 10211611554029 is a prime.

It is a super-2 number, since 2×10211611554061² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211611554041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105805777030 + 5105805777031.

It is an arithmetic number, because the mean of its divisors is an integer number (5105805777031).

Almost surely, 2^{10211611554061} is an apocalyptic number.

It is an amenable number.

10211611554061 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211611554061 is an equidigital number, since it uses as much as digits as its factorization.

10211611554061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 34.

The spelling of 10211611554061 in words is "ten trillion, two hundred eleven billion, six hundred eleven million, five hundred fifty-four thousand, sixty-one".