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121014811 = 1091110921
BaseRepresentation
bin1110011011010…
…00101000011011
322102201012010001
413031220220123
5221434433221
620001433431
72666415601
oct715505033
9272635101
10121014811
1162345245
123463b877
131c0c0ac8
1412101871
15a956391
hex7368a1b

121014811 has 4 divisors (see below), whose sum is σ = 121126824. Its totient is φ = 120902800.

The previous prime is 121014809. The next prime is 121014869. The reversal of 121014811 is 118410121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118410121 = 234150581.

It is a cyclic number.

It is not a de Polignac number, because 121014811 - 21 = 121014809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121014011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54370 + ... + 56551.

It is an arithmetic number, because the mean of its divisors is an integer number (30281706).

Almost surely, 2121014811 is an apocalyptic number.

121014811 is a deficient number, since it is larger than the sum of its proper divisors (112013).

121014811 is a wasteful number, since it uses less digits than its factorization.

121014811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112012.

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 121014811 is about 11000.6732066724. The cubic root of 121014811 is about 494.6289243558.

Adding to 121014811 its reverse (118410121), we get a palindrome (239424932).

The spelling of 121014811 in words is "one hundred twenty-one million, fourteen thousand, eight hundred eleven".

Divisors: 1 1091 110921 121014811