111201949 has 2 divisors, whose sum is σ = 111201950. Its totient is φ = 111201948.

The previous prime is 111201943. The next prime is 111201967. The reversal of 111201949 is 949102111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80676324 + 30525625 = 8982^2 + 5525^2 .

It is a cyclic number.

It is not a de Polignac number, because 111201949 - 2⁵ = 111201917 is a prime.

It is a super-2 number, since 2×111201949² = 24731746922797202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111201943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55600974 + 55600975.

It is an arithmetic number, because the mean of its divisors is an integer number (55600975).

Almost surely, 2^111201949 is an apocalyptic number.

It is an amenable number.

111201949 is a deficient number, since it is larger than the sum of its proper divisors (1).

111201949 is an equidigital number, since it uses as much as digits as its factorization.

111201949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 111201949 is about 10545.2334729962. The cubic root of 111201949 is about 480.8808319893.

The spelling of 111201949 in words is "one hundred eleven million, two hundred one thousand, nine hundred forty-nine".