2112154061 has 2 divisors, whose sum is σ = 2112154062. Its totient is φ = 2112154060.

The previous prime is 2112154027. The next prime is 2112154063. The reversal of 2112154061 is 1604512112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1947545161 + 164608900 = 44131^2 + 12830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112154061 is a prime.

It is a super-2 number, since 2×2112154061² = 8922389554797583442, which contains 22 as substring.

Together with 2112154063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112154063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056077030 + 1056077031.

It is an arithmetic number, because the mean of its divisors is an integer number (1056077031).

Almost surely, 2^2112154061 is an apocalyptic number.

It is an amenable number.

2112154061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112154061 is an equidigital number, since it uses as much as digits as its factorization.

2112154061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2112154061 is about 45958.1773028479. The cubic root of 2112154061 is about 1283.0449279536.

Adding to 2112154061 its reverse (1604512112), we get a palindrome (3716666173).

The spelling of 2112154061 in words is "two billion, one hundred twelve million, one hundred fifty-four thousand, sixty-one".