4921121 has 2 divisors, whose sum is σ = 4921122. Its totient is φ = 4921120.

The previous prime is 4921117. The next prime is 4921127. The reversal of 4921121 is 1211294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3841600 + 1079521 = 1960^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 4921121 - 2² = 4921117 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4921093 and 4921102.

It is not a weakly prime, because it can be changed into another prime (4921127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2460560 + 2460561.

It is an arithmetic number, because the mean of its divisors is an integer number (2460561).

Almost surely, 2^4921121 is an apocalyptic number.

It is an amenable number.

4921121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4921121 is an equidigital number, since it uses as much as digits as its factorization.

4921121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

The square root of 4921121 is about 2218.3599798049. The cubic root of 4921121 is about 170.0936162576.

The spelling of 4921121 in words is "four million, nine hundred twenty-one thousand, one hundred twenty-one".