161226924101 has 2 divisors, whose sum is σ = 161226924102. Its totient is φ = 161226924100.

The previous prime is 161226924017. The next prime is 161226924113. The reversal of 161226924101 is 101429622161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134010173476 + 27216750625 = 366074^2 + 164975^2 .

It is a cyclic number.

It is not a de Polignac number, because 161226924101 - 2¹⁸ = 161226661957 is a prime.

It is a super-2 number, since 2×161226924101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161226924401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80613462050 + 80613462051.

It is an arithmetic number, because the mean of its divisors is an integer number (80613462051).

Almost surely, 2^161226924101 is an apocalyptic number.

It is an amenable number.

161226924101 is a deficient number, since it is larger than the sum of its proper divisors (1).

161226924101 is an equidigital number, since it uses as much as digits as its factorization.

161226924101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 161226924101 in words is "one hundred sixty-one billion, two hundred twenty-six million, nine hundred twenty-four thousand, one hundred one".