38011121 has 2 divisors, whose sum is σ = 38011122. Its totient is φ = 38011120.

The previous prime is 38011093. The next prime is 38011139. The reversal of 38011121 is 12111083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20830096 + 17181025 = 4564^2 + 4145^2 .

It is a cyclic number.

It is not a de Polignac number, because 38011121 - 2²² = 33816817 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38011121.

It is not a weakly prime, because it can be changed into another prime (38011621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19005560 + 19005561.

It is an arithmetic number, because the mean of its divisors is an integer number (19005561).

Almost surely, 2^38011121 is an apocalyptic number.

38011121 is the 3296-th centered heptagonal number.

It is an amenable number.

38011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

38011121 is an equidigital number, since it uses as much as digits as its factorization.

38011121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 38011121 is about 6165.3159691941. The cubic root of 38011121 is about 336.2303344358.

The spelling of 38011121 in words is "thirty-eight million, eleven thousand, one hundred twenty-one".