2115054101 has 2 divisors, whose sum is σ = 2115054102. Its totient is φ = 2115054100.

The previous prime is 2115054091. The next prime is 2115054119. The reversal of 2115054101 is 1014505112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2038071025 + 76983076 = 45145^2 + 8774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115054101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115054121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057527050 + 1057527051.

It is an arithmetic number, because the mean of its divisors is an integer number (1057527051).

Almost surely, 2^2115054101 is an apocalyptic number.

It is an amenable number.

2115054101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115054101 is an equidigital number, since it uses as much as digits as its factorization.

2115054101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 2115054101 is about 45989.7173398576. The cubic root of 2115054101 is about 1283.6318769243.

Adding to 2115054101 its reverse (1014505112), we get a palindrome (3129559213).

The spelling of 2115054101 in words is "two billion, one hundred fifteen million, fifty-four thousand, one hundred one".